Audi A8, 2014

 

 

 Audi A8, 2014

Superior design, hand-built quality, systematic lightweight construction and an abundance of high-end technologies: Audi presents the comprehensively updated A8, its successful flagship, at the 2013 IAA in Frankfurt am Main. The engine lineup has once again become more powerful and efficient; new assistance systems and the innovative Matrix LED headlights make driving more composed than ever.

The A8 makes Audi among the innovation leaders in the worldwide luxury segment, the most demanding automobile category. One great strength of the big sedan is its low weight. The Audi A8 3.0 TFSI with the normal wheelbase has a curb weight of just 1,830 kilograms (4,034.46 lb) - best-in-class for models with all-wheel drive.

The key factor in its lightweight construction is the body, which except for the B-pillars is made entirely of aluminum. An Audi Space Frame (ASF) design, it tips the scales at just 231 kilograms (509.27 lb), roughly 40 percent less than a comparable steel construction. The ASF body also makes it possible to reduce weight in many other areas, from the brakes to the fuel tank.

Length (5.14 meters [16.86 ft]), wheelbase (2.99 meters [9.81 ft]), width (1.95 meters [6.40 ft]) and height (1.46 meters [4.79 ft]) remain unchanged, giving the Audi A8 the sportiest look in the segment. The A8 L gains an additional 13 centimeters (5.12 in) in both length and wheelbase. Equipped with a TDI engine, both body variants have a drag coefficient of just 0.26. This same figure with a TFSI engine is 0.27.

In updating the A8, Audi paid great attention to the acoustics. Additional noise damping measures reduce the already low interior noise level even further. The trunk now has a maximum of 520 liters (18.36 cubic feet) and can be loaded substantially better thanks to the altered layout. The optional power trunk closing assist means that the entire car can be locked at the touch of a button.

Dynamic, yet harmoniously elegant - the big sedan's design has become even more expressive. The engine hood, the single-frame grille and the front bumper are even more sculptured and precise; the lower edge of the headlights is straight. In the German market, LED headlights are standard in all models with a V8 engine.

The headlights with optional Matrix LED technology, which sets new benchmarks with respect to design and technology. With these headlights, the high-beam unit is made up of 25 individual segments. The small light-emitting diodes, which work in conjunction with lenses and reflectors connected in series, are activated and deactivated or dimmed individually according to the situation. This enables the system to react precisely to other cars, which it recognizes using a camera, and always illuminate the road brightly. Additional features of the new headlights are the intelligent cornering light, new-look daytime running lights and dynamic turn signals.

The LED lights at the rear of the new Audi A8 have also become flatter and are joined together by a continuous chrome strip. In all models except the S8, the redesigned bumper houses two rhomboid tailpipes. Chrome strips in the lower section of the body, fine inserts in the door handles and high-gloss black window frames round out the distinctive features. There is a choice of 12 exterior colors, including five new ones. Wheels are available in sizes up to 21 inches with 275/35-series tires.

The engines: more power with greater efficiency
Besides the S8, A8 L W12 quattro and A8 hybrid models, the new Audi A8 will be offered in the German market with two TFSI gasoline engines and two TDI units. A package of measures to reduce friction reduce fuel consumption by as much as ten percent, and most engines have also seen an increase in power. All engines already satisfy the requirements of the Euro 6 standard.

Under the hood of the A8 3.0 TFSI quattro is a V6 engine whose mechanical compressor can be deactivated. Power output is now 228 kW (310 hp), an increase of 15 kW (20 hp). The V6 accelerates the standard wheelbase version of the sedan from 0 to 100 km/h (62.14 mph) in 5.7 seconds. Top speed is electronically restricted to 250 km/h (155.34 mph). It consumes on average 7.8 liters per 100 kilometers (30.16 US mpg), corresponding to 183 grams CO2 per kilometer (294.51 g/mile).

The twin-turbo V8 in the A8 4.0 TFSI quattro now produces 320 kW (435 hp), 11 kW (15 hp) more than before. Key performance data: from 0 to 100 km/h (62.14 mph) in 4.5 seconds; average fuel consumption 9.1 liters per 100 kilometers (25.85 US mpg), corresponding to 213 grams CO2 per kilometer (342.79 g/mile). The Audi cylinder on demand (COD) system plays a major role in this efficiency by deactivating four of the eight cylinders under part load.

With average fuel consumption of 5.9 liters per 100 kilometers (39.87 US mpg), corresponding to 155 grams CO2 per kilometer (249.45 g/mile), the 3.0 TDI clean diesel set a new record in the all-wheel-drive luxury segment. The V6 diesel engine's output has been bumped up 6 kW (8 hp) to 190 kW (258 hp). It now accelerates the sedan from 0 to 100 km/h (62.14 mph) in 5.9 seconds.

When it comes to torque, the 4.2 TDI clean diesel tops the A8 lineup, delivering 850 Nm (626.93 lb-ft) to the crankshaft. Audi has boosted its output by a whopping 25 kW (34 hp) to 283 kW (385 hp). Equipped with the powerful V8 diesel, the A8 completes the standard sprint in 4.7 seconds, and average fuel consumption is 7.4 liters per 100 kilometers (31.79 US mpg), which corresponds to 194 grams CO2 per kilometer (312.21 g/mile).

Powertrain: tiptronic and quattro
All variants of the model series are equipped with a fast and smooth-shifting, eight-speed tiptronic. The transmission, which can be controlled electronically using an elegant selector lever as well as paddles on the steering wheel, works in conjunction with the quattro permanent all-wheel drive system. The latter is standard in the A8 series (except for the A8 hybrid). If desired, Audi will combine quattro all-wheel drive with the optional sport differential on the rear axle. The power can then be distributed between the rear wheels as needed for even more agile handling. The sport differential is standard in the S8 and the A8 4.2 TDI clean diesel quattro.

The Audi A8 owes its sporty character in large part to the sophisticated chassis. Axle load distribution is balanced, and all wheel control arms are aluminum. The Audi drive select system, which enables the driver to influence the function of various technical modules such as the steering and the accelerator characteristic, is standard. It also controls the adaptive air suspension with adaptive damping, which adjusts the body's ride height to the speed driven. Audi also offers the air suspension with a sporty setup upon request.

The power steering now uses an efficient electromechanical drive that reduces fuel consumption and also enables the use of numerous assistance systems. The optional dynamic steering varies its ratio with the car's speed. All brake discs are internally vented. Carbon fiber ceramic brake discs are available for V8 models, the S8 and the A8 L W12.

One new component of Audi's lightweight construction technology are the 9J x 20 aluminum-technology wheels. These are based on forged support wheels that are joined via a special process to a ten-spoke design element of high-strength polymer. This technology gives designers the freedom to use large-area, yet three-dimensional designs.

Elegant and airy: the interior
The interior of the Audi flagship enchants with its elegant, airy lines. The instrument panel is lean and low, and below the windshield is a long arc - the wrap-around. Space is generous in every seat. The broad range of options for the front seats includes ventilation and massage functions with five programs and intensities each.

Audi offers electrically adjustable, individual rear seats as an option for the A8 and the A8 L. The A8 L is also available with a continuous, leather-covered center console. Equipped with every available luxury feature, the relaxation seat with electrically adjustable footrest is the first-class solution here.

Among the numerous individual options available for the A8 family are four-zone deluxe automatic air conditioning, the panorama glass roof, convenience key with power door closing assist, privacy windows, a cooler, folding tables and an ionizer to improve air quality.

Audi quality knows no compromise. All of the materials in the new A8 have been carefully chosen and precisely worked. Lovingly executed details document the hand-built character, from the barely visible gaps in the two-piece inlays to the ambient lighting with its adjustable LED light to the seat covers in premium grades of leather. The best of these is the new Unicum leather in nutmeg brown, which is particularly natural-looking, soft and breathable.

A new range of choices for seat coverings, inlays and interior colors is available in many areas. New additions include the woods Fine grain poplar brown-silver and Fine grain ash natural gold-brown, whose fine pores are filled with small amounts of silver and gold, respectively. Audi design selection offers customers an aesthetic pre-selection of exclusive materials and colors for the interior, including sycamore gray, marble gray and vermont brown for the S8. The Audi exclusive range offers an even greater degree of individualization for particularly discerning customers.

As is typical for Audi, the brand's flagship features exemplarily clear controls despite the abundance of functions. The driver information system with color seven-inch display and the eight-inch MMI monitor are standard. If the optional MMI navigation plus is installed, the control element on the center tunnel console includes a touchpad. The MMI touchpad enables the driver to control numerous functions; for example, the navigation destination can be entered by tracing the letters on the pad.

The Audi connect including car phone is available as an ideal extension of MMI navigation plus. It connects the new A8 to the Internet via an integrated UMTS module. Thanks to the WLAN hotspot, passengers can surf and e-mail freely with their mobile devices. For the driver, the system delivers the tailored online services from Audi connect to the car, including online traffic information with real-time data and navigation with Google Earth and Google Street View.

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Audi A3 Sportback S-Line, 2014

 

 

Audi A3 Sportback S-Line, 2014

Sporty, versatile and functional - Audi presented the new A3 Sportback. The compact five-door model with the spacious luggage compartment is groundbreakingly light thanks to ultra lightweight technology. The engines are powerful and highly efficient. The infotainment with the intuitive connect technology and the driver assistance systems available in the new Audi A3 Sportback set new standards in the premium compact segment. The overall design language concentrates on the essentials, with each individual design element making a confident aesthetic statement.

A lightweight car is a prerequisite for sportiness and efficiency. ultra lightweight technology from Audi reduces the weight of the new Audi A3 Sportback by as much as 90 kilograms (198.42 lb) compared with the previous version. Equipped with the 1.4 TFSI engine, the five-door model has a curb weight (without driver) of just 1,205 kilograms (2,656.57 lb). Hot-shaped steels are used in the occupant cell of the new A3 Sportback to reduce the weight. The complete occupant cell is 37 kilograms (81.57 lb) lighter overall than in the previous model. Significant weight reductions were also achieved in the interior and with the engines. Audi, worldwide pioneer in lightweight construction, has reversed the weight spiral and once again set a new record.

The body of the new Audi A3 Sportback is long and lean. While the length (4,310 millimeters [14.14 ft]), width (1,780 millimeters [5.84 ft]) and height (1,425 millimeters [4.68 ft]) of the new model are only slightly greater than on the previous model, the wheelbase is now significantly longer at 2,636 millimeters (8.65 ft), an increase of 58 millimeters (2.28 in).

The front end is low; the roof arch spans a dome that extends beyond the subtle roof spoiler to the muscular tail end. The design with the three side windows is taut, with every detail precise and expressive. The large wheel wells underscore the sporty aspirations of the new Audi A3 Sportback.

The distinctive, Stone Gray single-frame grille with the angled upper corners is the distinguishing element at the front of the vehicle. Its horizontal slats and the Audi rings are highlighted three-dimensionally. The flat headlights are works of art and give the new Audi A3 Sportback a determined gaze. Full LED headlights will be offered at a later time.

The interior of the new A3 Sportback is elegant, airy and cleanly designed. It carries over the dynamics of the exterior. The instrument panel with its curving front is slim and low. Together with the center console oriented toward the driver, it appears to float slightly.

Large, round air nozzles in jet design, the elegant user interface panel for the climate control system and sculpturally styled trim set the tone - with their polish they bring the quality of the full-size class into the new Audi A3 Sportback. The seats and steering wheels are new developments, and the car's user controls are clear and intuitive - as they are in every Audi. The compact five-door model offers a generous luggage capacity of between 380 and 1,220 liters (13.42 and 43.08 cu ft).

Audi ultra lightweight technology
ultra lightweight construction has long been a main pillar of the brand. Audi recorded a pioneering achievement in the use of aluminum as a body material back in 1994: The first A8 had a full-aluminum body in ASF (Audi Space Frame) technology.

ultra lightweight technology reduces the weight of the new Audi A3 Sportback by as much as 90 kilograms (199.42 lb) compared with the previous version. Equipped with the 1.4 TFSI engine, the compact five-door model has a curb weight (without driver) of just 1,205 kilograms (2,656.57 lb). Audi, worldwide pioneer in lightweight construction, has reversed the weight spiral and once again set a new record.

ultra lightweight construction in the body
The broad-based expertise of the Audi body development engineers is by no means restricted to a certain material, but rather encompasses all relevant materials. The multimaterial construction of the new Audi A3 Sportback is entirely in keeping with the motto "The right material at the right place for optimal function."

High-end components of hot-shaped steel in the occupant cell form a strong, yet lightweight structure. Before deformation, they are heated in a continuous flow furnace to nearly 1,000 degrees Celsius and are then cooled to about 200 degrees in a water-cooled stamping press.

This extreme temperature jump creates an iron-carbon structure with extreme tensile strength. Hot shaped steels are able to perform with relatively thin walls, and this makes them lightweight.

Hot-shaped steels represent a roughly 25 percent share of body materials. They are used in the transition from the front of the vehicle to the occupant cell, in the A-pillars, roof arch, center tunnel, side sills and floor panels. What is known as a tailored rolled blank forms the transition from the floor to the rear body section - its eleven individual segments are rolled into five different thicknesses.

The B-pillars also consist of this high-end steel; their lower sections are more flexible than above, since the energy of a side-impact collision must be absorbed here. All together, the hot-shaped steels in the new Audi A3 Sportback reduce the weight of the vehicle by 37 kilograms (81.57 lb) compared with the previous model.

High-strength and ultra-high-strength steel grades are used in many other body areas such as in the side members and in the floor of the passenger cell. The engine hood, fenders, the subframe of the front axle and the sections mounted behind the front bumper as crash absorbers are made of aluminum. Together the aluminum components save around twelve kilograms (26.46 lb), thus improving axle load distribution.

Processing aluminum components in body construction and joining these components with steel components are challenging tasks. The same is true of welding hot-shaped components, which are coated with a corrosion-inhibiting aluminum-silicon alloy. Audi benefits here from its extensive know-how in ultra lightweight construction - the joining technologies have been practice-proven for years now in models such as the TT. A number of very different joining technologies are used to assemble the new A3 Sportback, including bonding, clinching and punch riveting.

Between the side wall and the roof, which are both made of steel, a Plasmatron brazed seam produces the joint, where the allowable tolerance is just a few tenths of a millimeter. The finished seam is smoothed with brushes - the practically invisible zero-joint that is produced is an expression of the stringent precision thinking at Audi.

Unlike the previous model, the doors and window frames are stamped in one piece, and this also saves weight. The door hinges integrate a convenient new type of clamping mechanism.

Safety and aerodynamics
The new Audi A3 Sportback is tops when it comes to passive safety. In a frontal collision, the front cross-member distributes the forces to the two side members, which undergo defined deformation to dissipate these forces. The structural members for the engine and front suspension, as well as the sections in the upper area of the fenders, act as additional load paths. If necessary, the pedals are decoupled from the firewall; the steering column absorbs energy and is not displaced into the occupant cell.

In a side impact, the occupant cell offers excellent protection with its hot-shaped steel components such as the sills and B-pillars. In a rear-end collision, the bumper's cross members redirect loads to the large side members made of high-strength steel.

ultra lightweight construction in the interior
The Audi ultra lightweight principle is not limited to the body or to specific subassemblies and parts - developers always consider the vehicle as a whole, and in their work every gram counts. This is the only way the car's curb weight could be reduced by up to 90 kg (198.42 lb) compared with the previous model.

The engineers have internalized the Audi ultra lightweight principle, and in the interior of the new Audi A3 Sportback they also succeeded in eliminating every superfluous gram. The redesigned seats contribute a one kilogram (2.20 lb) weight savings; lightweight plastic inserts replace the steel wire used previously in the frame of the rear bench seat.

A new control unit arrangement requires fewer wires, thus reducing the weight by 1.5 kilograms (3.31 lb). The blower motor requires fewer coils, and the air conditioning system shed four kilograms (8.82 lb) of weight. The housing of the passenger airbag is made of polymer; the mounting for the MMI monitor is made of magnesium. Together these two solutions save 640 grams (1.41 lb). In the previous model, many linings in the interior were fastened with steel screws. In the new Audi A3 Sportback, polymer expanding rivets were used here for a weight savings of four grams (0.01 lb) per fastening point. When it comes to the Audi ultra lightweight construction principle, every gram counts.

ultra lightweight construction in engines and chassis
The engines of the new Audi A3 Sportback have shed a significant amount of weight as well. The engines of the new A3 have shed a lot of weight as well. The 1.8 TFSI, for example, weighs just a little over 130 kilograms (286.60 lb), while the 1.4 TFSI weighs in at just 107 kilograms (235.89 lb) - 21 kilograms (46.30 lb) less than the previous engine. With a weight difference of 15 kilograms (33.07 lb), the aluminum crankcase accounts for the largest share of reductions, but progress has also been made in many small engine details - e.g. in the new aluminum pistons and the hollow-bored connecting rod pins.

Environmental footprint
In developing the new A3, Audi conducted an environmental assessment of two of the engine versions. The 1.4 TFSI and the 2.0 TDI - both with a manual transmission - were subjected to a detailed analysis. Both versions offer clear benefits compared with their respective previous models. Greenhouse gas emissions, for example, are reduced by roughly two metric tons per model. This corresponds to roughly seven to nine percent of the greenhouse gas emissions over the entire life cycle. This is due in large part to the substantially lower fuel consumption and low weight of the new models. At the end of its life, about 95 percent of the new Audi A3 Sportback can be recycled.

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Audi A3 Sportback g-tron, 2014

 

 

 

• Audi A3 Sportback g-tron, 2014

Audi is taking a large step towards sustainable future mobility with the A3 Sportback g-tron. The five-door premium compact model, which will appear on the market at the end of the year, runs on both the fossil fuel natural gas and on climate-friendly Audi e-gas, which Audi itself produces at a recently completed power-to-gas plant. It innovatively combines ecological balance, economy and high-tech solutions.

The Audi A3 Sportback g-tron, the brand's first natural gas car to go into production, reveals the sheer depth of the technological expertise of Audi - from ultra lightweight technology through the highly advanced infotainment to the driver assistance systems. It showcases state-of-the-art CNG technology (CNG = compressed natural gas), complete with the fuel storage technology. Its two pressurized tanks beneath the trunk floor each hold around seven kilograms (15.43 lb) of gas; they essentially use the recess for the spare wheel, thus impinging only minimally on the load capacity.

These tanks, which store the gas at a pressure of 200 bar, use the ultra lightweight construction principle of Audi: They weigh 70 percent less than conventional steel bottles, each of them weighing 27 kilograms (59.52 lb) less than an equivalent steel version. Their composition reveals an innovative layout: The inner layer consists of a gas-impermeable polyamide matrix, while a second layer of carbon fiber reinforced polymer (CFRP) gives the tank its extremely high strength; a third layer of glass fiber reinforced polymer (GFRP) provides protection against damage from the outside. Epoxy resin is used to bind the fiber reinforced materials.

A second highlight of the Audi A3 Sportback g-tron is its electronic gas pressure regulator. This compact and lightweight component reduces the high pressure of the gas flowing from the cylinders down to around five to nine bar in two stages. It ensures that the right pressure is always present in the gas rail and at the injector valves - low pressure for efficient driving in the lower speed range, and higher when the driver wants more power and torque.

When the pressure in the tank falls below 10 bar when there remains about 0.6 kilogram (1.32 lb) of gas, the engine management automatically switches to gasoline operation. The Audi A3 Sportback g-tron is designed as a bi-fuel concept. In the NEDC cycle it drives over 400 kilometers (248.55 miles) on gas and a further 900 kilometers (559.23 miles) on gasoline, so its overall range is comparable to a TDI. The driver information system always shows current consumption; two displays in the instrument cluster indicate the tanks' fuel level. The filler pipes for both are located behind the same flap.

After refueling, and whenever it is very cold, the Audi A3 Sportback g-tron is started with gasoline initially, then it is switched over to natural gas as quickly as possible. Its engine is a modified 1.4 TFSI; the cylinder head, turbocharger, injection system and catalytic converter are specifically designed to run on gas. With an output of 81 kW (110 hp) and 200 Nm (147.51 lb-ft) of torque, the compact five-door model accelerates from 0 to 100 km/h (62.14 mph) in less than 11 seconds; it achieves a top speed of more than 190 km/h (118.06 mph).

The Audi A3 Sportback g-tron is the benchmark in its segment for efficiency and economy. Its CO2 emissions in the exhaust gas remain below 95 grams per km (152.89 g/mile) in the NEDC cycle, and the fuel costs for the customer are around four euros per 100 km (62.14 miles). Over 100 km (62.14 miles), the compact car uses on average less than 3.5 kilograms (7.72 lb) of natural gas or Audi e-gas - the fuel that is produced in the Audi e-gas project from CO2 and water using renewable power. This fuel is a major step into the future of mobility for the brand with the four rings - Audi is the first carmaker to be establishing production facilities for a whole chain of sustainable energy sources.

The e-gas plant that Audi has set up in Werlte (Emsland) involes two major process stages - electrolysis and methanation. In the first step, the plant uses renewable power to break water down into oxygen and hydrogen in three electrolyzers. The hydrogen obtained from this process can be stored separately if required, for powering future fuel-cell vehicles.

However for the time being, in the absence of an area-wide hydrogen infrastructure a second process step is carried out: The hydrogen is then reacted with CO2 to produce synthetic methane, or Audi e-gas. In chemical terms it is almost identical to the fossil fuel natural gas and can therefore be distributed throughout Germany using the natural gas grid to CNG filling stations, for refueling vehicles.

The carbon dioxide used in the Audi e-gas plant is waste gas from a nearby biomethane plant that runs on organic waste and is operated by power utility EWE. That plant separates it from the crude biogas to produce highly pure biomethane. The Audi e-gas plant is expected to achieve an annual output of around 1,000 metric tons, capturing around 2,800 metric tons of CO2 that would otherwise pollute the atmosphere. As a result, the fuel is climate-neutral.

Throughout the entire production process at the e-gas plan that Audi has erected jointly with the plant engineer ETOGAS (formerly SolarFuel), the efficient use of energy flows is a high priority. The waste heat that is given off during methanation is put to good use in sanitizing the waste and preparing the biogas, appreciably increasing overall efficiency. The Audi e-gas plant is currently being commissioned and from summer 2013 will be supplying the grid with synthetic gas.

Audi e-gas is a high-energy fuel that is ideal for powering combustion engines. The CO2-neutral e-gas from Werlte can power 1,500 new Audi A3 Sportback g-tron vehicles, each driving 15,000 kilometers (9,320.57 miles) a year. In operation, these cars do not produce a single gram of CO2 that has not previously been captured during the e-gas production process. Even in the comprehensive well-to-wheel calculation, which includes the outlay for building and operating wind turbines and the e-gas plant, current forecasts predict the CO2 equivalents to remain under 30 grams per km (48.28 g/mile).

The A3 Sportback g-tron can fundamentally run on natural gas, the biomethane on sale at certain filling stations, or e-gas. Customers wanting to buy e-gas can sign up for a particular contingent of e-gas for the A3 g-tron at their Audi dealer. This enables them to take part in an accounting process that ensures that the amount of gas that they put in their vehicle at the natural gas filling station has been supplied to the grid by the Audi e-gas plant.

They pay for the e-gas monthly on the basis of a fuel supply agreement. The customer takes this out separately to the lease contract. They pay the CNG price advertised at the filling station by monthly bill for their e-gas card. This serves as an accounting instrument that gives the customer certifiable evidence of the sustainable mobility service they are receiving. It will be accepted at most CNG filling stations throughout Germany - if customers so wish, their navigation system or smartphone will locate these for them. But the A3 Sportback g-tron can of course also be refueled at any other natural gas station, and will then be supplied with natural gas or biomethane like any other natural gas vehicle.

The German energy industry as a whole stands to benefit from the Audi e-gas concept. There is still the unsolved question of how to store renewable power, of which there is an increasingly frequent oversupply following the energy policy rethink, efficiently and independently of location. The world first of linking power with the gas grid as demonstrated by the e-gas project in Werlte offers a solution to this problem by storing the e-gas produced in the natural gas grid, the biggest and most efficient form of energy storage available. This prospect could provide a major boost to the expansion of renewable energies.

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Audi A3 Sedan, 2014

 

 

 

 

•  Audi A3 Sedan, 2014

The Audi is entering the world's largest market segment, the class of compact sedans. The dynamic four-door car offers all of the strengths of the A3 model series - with low weight thanks to lightweight design, powerful and highly efficient engines and numerous high-end solutions for infotainment as well as driver assistance systems. The top model of the series is the S3 Sedan with 221 kW (300 hp).

Exterior design
The Audi A3 Sedan has a sporty stance on the road, and it is precise and highly expressive in every detail. Its design is a cross between the classic three-box concept and the coupé philosophy. The "tornado line" design element forms a distinct light-refracting edge that runs over the entire side. The overhangs are short. The four-door car has a 2.64 meter (8.66 ft) long wheelbase and an overall length of 4.46 meters (14.63 ft).

The dynamic line rises more sharply than on the other two A3 models. The side surfaces are more intensively curved, and the wheel arches are slightly more flared. With a width of 1.80 meters (5.91 ft), the A3 Sedan is eleven mm (0.43 in) wider than the A3 Sportback; its height (1.42 meters [4.66 ft]) is still nine mm (0.35 in) lower than that of the Sportback.

The four-door car also expresses independent lines in the contour of its hood, in the bumpers, air intakes and its implementation of the singleframe grille. At the rear, the spoiler is integrated in the trunk lid, and the lights emphasize the car's horizontal lines with their broad and low cuts. LED technology is available as an option. Audi will also be offering full-LED headlights right at market launch - their innovative technology and distinctive appearance underscore the exceptional positioning of the Audi A3 Sedan.

Body
With a 1.4 TFSI engine, the sedan has a curb weight of just 1,250 kg (2,755.78 lb). Audi uses many hot-shaped steel parts in the passenger compartment for low weight and maximum strength, while the engine hood is made of aluminum. The body is very rigid, crash-safe and quiet.

The strict dictate of lightweight design carries over into the interior and the engines as well. The four-cylinder engine weighs just over 100 kg (220.46 lb).

Powertrain
When the Audi A3 Sedan launches in Germany and Europe, the engine line-up will consist of three four-cylinder engines. Completely redesigned, the engines bring together efficiency technologies from Audi - direct fuel injection, turbocharging, innovative thermal management and the start-stop-system. The line-up of engines and transmissions will grow further, and will include two new basic engines.

The 2.0 TDI produces 110 kW (150 hp) and develops 320 Nm (236.02 lb-ft) of torque. It accelerates the Audi A3 Sedan from 0 to 100 km/h (62.14 mph) in 8.7 seconds and takes it to a top speed of 220 km/h (136.70 mph). Its combined fuel consumption is 4.1 liters per 100 km (57.37 US mpg) - for a CO2 equivalent of 108 grams per km (172.20 g/mile).

Key performance parameters of the 1.4 TFSI are 103 kW (140 hp) and 250 Nm (184.39 lb-ft). At low engine load, the COD (cylinder on demand) system deactivates two cylinders. The 1.4-liter engine gives the car a combined fuel consumption of just 4.7 liters fuel per 100 km (50.05 US mpg); its CO2 emissions are 109 grams per km (175.42 g/mile). It takes just 8.4 seconds to accelerate from 0 to 100 km/h (62.14 mph), and the car's top speed with this engine is 213 km/h (132.35 mph).

The 1.8 TFSI produces 132 kW (180 hp) and 250 Nm (184.39 lb-ft) of torque. It utilizes an extensive package of high-end technologies, including dual injection into the combustion chambers and the induction manifold. It enables sporty performance, taking 7.3 seconds for the standard sprint to 100 km/h (62.14 mph) and reaching a top speed of 235 km/h (146.02 mph). Its combined fuel consumption is 5.6 liters per 100 km (42.00 US mpg), equivalent to 129 grams CO2 per km (207.61 g/mile).

Depending on the engine, either a manual six-speed transmission or the S tronic is used. The dual-clutch transmission shifts the gears without any noticeable break in propulsive power. It is controlled by either the selector lever or paddles on the steering wheel.

The D shifting map is laid out for maximum fuel efficiency, while the rev levels are somewhat higher in the sporty S mode. In cooperation with the Audi drive select vehicle dynamics system, the S tronic offers a free-wheeling function in its efficiency mode which further reduces fuel consumption.

Chassis
The pole position that the Audi A3 Sedan has enjoyed in its segment is largely due to its chassis engineering. Providing the foundation here is a finely balanced axle load distribution (60 percent front and 40 percent rear, varies somewhat for different engines). All engines are tilted twelve degrees towards the rear, while the front wheel suspensions are placed far forward.

The front suspension is a MacPherson design with A-arms and aluminum pivot bearings. It is joined to an aluminum subframe. The electromechanically assisted steering system operates sensitively and efficiently together with various assistance systems. In the four-link rear suspension, which utilizes a steel crossmember, the springs and shock absorbers are mounted separately. The sport suspensions for the Ambition line and S line lower the body by up to 25 mm (0.98 in).

The Audi A3 Sedan has 16- to 18-inch-wheels; quattro GmbH can also deliver wheels up to 19 inches in diameter. The front brake discs are internally ventilated.

Electronic stabilization control or ESC also includes an electronic differential lock. In fast driving through curves, it brakes the inside front wheel very slightly to minimize understeering and improve traction.

Interior
The interior of the Audi A3 Sedan is characterized by impressive attention to detail. The lines and surfaces are cleanly designed, and a long arc spans the width of the windshield. The instrument panel with its curved front is slender, and the center console is slightly turned towards the driver. The optional color display of the driver information system (DIS) shows images in highly detailed 3D graphics.

Starting with the MMI Radio system, the MMI operating system has an electrically extending screen. Its terminal is housed in the console of the center tunnel. The electromechanical parking brake is activated by a pushbutton. The steering wheel has either three or four spokes, depending on the version. The customer can also order the steering wheel with a flat bottom, multifunction keys and shift paddles. Audi can also install sport seats in the front as an option. They are standard in the Ambition line, where S sport seats with integrated head restraints are available as an option.

The interior colors - black, titan gray, pashmina beige and chestnut brown - are based on the specific equipment line. The two-tone Audi design selection lasso brown creates an exclusive color world. The S line sport package, which can be ordered for the A3 Sedan Ambition, immerses the interior space entirely in black. Available upholstery materials include fabric covers, a mix of fabric and artificial leather, Milano leather and a combination of Pearl nappa leather and Alcantara.

Thanks to the long wheelbase, rear passengers also enjoy ample space and comfortable entry. The cargo capacity of the trunk measures 425 liters (15.01 cubic feet). This capacity can be increased by folding down the rear seatbacks which come with a load-through hatch as an option. The trunk lid automatically swings upward after it is unlocked.

Infotainment and Audi connect
Like its siblings in the model series, the Audi A3 Sedan makes use of the new modular infotainment system (MIB). The top system is MMI Navigation plus with an SSD hard drive offering 64 GB of storage, a DVD drive and whole-word voice control. A high-resolution 7-inch-screen shows the map image in detailed 3D graphics. The MMI Navigation plus system interfaces to cell phones and mobile players via Bluetooth. The user terminal has a turn/push control designed as a "touchwheel" with MMI touch - the touchwheel's top surface is a touch-sensitive pad for inputting letters, symbols and numbers.

Other infotainment components include a module for digital radio reception (DAB+), the Audi phone box for conveniently coupling a cell phone to the car antenna and the Bang & Olufsen sound system. Its 705 watt amplifier drives 14 loudspeakers in 5.1 surround sound, and LED light guides illuminate the woofer grilles in the front doors.

Audi connect covers all technologies that network the driver with the car, the Internet, infrastructure and other vehicles. Audi has made the system even more appealing - whenever possible the connection to the Internet is run over the super-fast LTE standard. The LTE telephone module replaces the previous UMTS module here, which enables a download rate of up to 100 MBit/s in the car.

Audi connect lets passengers conveniently surf and e-mail via an integrated WLAN hotspot. For the driver, it brings customized Internet services from Audi into the car. They range from navigation using images from Google Earth and Google Street View to Audi traffic information online and the smartphone app Audi music stream. News and information services complete the line-up. The online community services Facebook and Twitter are integrated in a vehicle-friendly way; along with a text-to-speech function, a practical text function is provided with prepared text units.

A new Audi connect service that is making its debut in the A3 Sedan is parking space information. It shows information on parking spaces, parking garages and underground garages near a destination selected by the driver. Whenever possible, the service indicates the number of available spaces and parking fees. The street address of the parking space can be used as a navigation destination.

Features
The new Audi A3 Sedan is launching with a generous set of standard features. The package of restraint systems includes a knee airbag for the driver. The DIS with color display in the Ambition and Ambiente lines includes an efficiency program, gearshift indicator and rest recommendation feature.

In addition, the Ambition line has a sport suspension, 17-inch-alloy wheels, sport seats and the Audi drive select system. The Ambiente line adds a cruise control system, interior LED lighting package and rear parking assistant. In addition to these standard features, Audi also offers other individual comfort and convenience options - such as a panoramic glass sunroof, convenience key, auxiliary heating and xenon-based adaptive lights. In conjunction with MMI Navigation plus, the lighting system utilizes route data to optimally illuminate the roadway depending on the driving situation.

Optional driver assistance systems also come from the premium class. The adaptive cruise control (ACC) maintains a desired distance between the A3 Sedan and the vehicle in front of it up to a speed of 150 km/h (93.21 mph); with the assistance package, which combines multiple systems, the control range is extended up to 200 km/h (124.27 mph). When combined with S tronic, ACC also offers a stop&go function for low speeds.

The rear radar sensor Audi side assist monitors lane changes, while Audi active lane assist helps the driver to keep within the lane by making slight corrections to the electromechanical steering as necessary. The video camera of Audi active lane assist is also used for traffic sign recognition. A high-end solution for convenient parking is park assist with display of the surroundings - it relieves the driver of steering work in parallel and perpendicular parking maneuvers.

Other high-end option is the safety system Audi pre sense basic. Pre sense front is integrated in the adaptive cruise control system. In case of an imminent rear-end collision, the system warns the driver using a staged reaction strategy; if necessary, it can even initiate hard braking. In an emergency situation at speeds under 30 km/h (18.64 mph), Audi pre sense front can brake the A3 Sedan with nearly full braking power. If a crash occurs, the brake assist system avoids secondary collisions by ensuring that the car does not travel further in an uncontrolled manner.

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Audi A3 Cabriolet, 2014

 

 

 

•  Audi A3 Cabriolet, 2014

Sporty, elegant and multi-faceted - Audi presents the new A3 Cabriolet. The compact four-seater impresses at first glance with its flowing lines and soft top. It is also at the top of its class technically - with systematic lightweight design, new engines, multi-faceted networking and high-performance assistance systems.

The Exterior design
The new Audi A3 Cabriolet has grown compared to the previous model: its length increased from 4.24 to 4.42 meters (13.91 to 14.50 ft), its wheelbase from 2.58 to 2.60 meters (8.46 to 8.53 ft) and its width from 1.77 to 1.79 meters (5.81 to 5.87 ft). Only its height (1.41 meters [4.63 ft]) was reduced by 15 millimeters (0.59 in). This gives the four-seat convertible a more elegant and sporty look on the road. Luggage capacity grew by 60 liters (2.12 cubic ft), and it is easier to load. The wheel housings can handle wheels up to 19 inches in size.

The front of the Audi A3 Cabriolet is characterized by the Singleframe radiator grille. The flat headlights give it a resolute look; they emphasize the horizontal styling and the air intakes in the bumper. Audi offers headlights with LED technology as an option; they are the only LED headlights in the compact segment to offer variable headlight leveling control.

The rear overhang plays a key role in the harmonious proportions of the two-door car. The windshield frame is made of aluminum - and an aluminum-look trim strip runs around the entire car. On the flanks, the design features a taut tornado line and contoured sheet metal surfaces that create a fascinating interplay of light and shadow.

The soft top
The new A3 Cabriolet has a soft cloth top that is stretched over a lightweight kinematic mechanism made of magnesium-steel, and it complements the car's design perfectly. At the press of a button, the top opens or closes electro-hydraulically in less than 18 seconds, even while driving up to 50 km/h (31.07 mph). In the opened state, the top - folded into three layers - rests in a tray that barely affects luggage capacity, which is 287 liters (10.14 cubic ft).

The fully automatic soft top has a glass rear window and is offered in Black as standard. A fully automatic acoustic top is available as an alternative; it has a thicker inner foam layer which reduces the already low interior noise level of the Audi A3 Cabriolet even more. The acoustic top is available in the three exterior colors of Black, Gray and Brown, and its roofliner is available in black and lunar silver. A wind deflector is standard for the Ambiente trim line, and head-level heating is an option for the front seats. An active rollover protection system protects the occupants in case of a rollover accident. It consists of two spring-loaded plates that are recessed into the body.

Body
In the base version, the car's curb weight is just 1,365 kilograms (3009.31 lb) - the new Audi A3 Cabriolet is around 50 kilograms (110.23 lb) lighter than the previous model despite its larger size and better comfort. Including its special reinforcements, which deliver high torsional stiffness, the body-in-white weighs 30 kilograms (66.14 lb) less than previously; the engine hood is made of aluminum. Weight was also significantly reduced in the interior and in the engines. This let Audi - a pioneer in this technical field - set an impressive best value in the compact class. Customers can choose from 16 different exterior paints for the body.

The Interior
Elegantly drawn lines and clean surfaces also typify the interior design of the new Audi A3 Cabriolet. The instrument panel is lean and low, its front is slightly curved, and the center console is angled slightly towards the driver. The large, round air vents in jet design, the control panel for the air conditioner and the three-dimensional trim strips bring premium class elegance into the interior. The optional lighting package includes a touch-sensitive switch for the reading lights - a feature being offered for the first time.

As in every Audi, workmanship quality is uncompromisingly high, and the car's controls are simple, intuitive and convenient. It offers enough space for four adults, and the seatbacks of the two rear seats can be folded down which opens up a wide through-load area. The steering wheel and seats are new designs, and the also new electro-mechanical parking brake is operated by a pushbutton on the center console.

The trim lines are named Attraction, Ambition and Ambiente. The S line sport package for the Ambition line immerses the interior space entirely in black. Customers can choose cloth, leather or Alcantara/leather upholstery materials. The Audi design selection lasso brown conveys an exclusive look.

Assistance systems
Driving in the new Audi A3 Cabriolet is even more impressive with its highly developed assistance systems. The driver information system with efficiency program and attention assist are already standard features on the Ambition and Ambiente lines. The options program includes adaptive cruise control, Audi side assist, Audi active lane assist, camera-based traffic sign recognition, park assist with selective display and various feature levels of the Audi pre sense safety system.

Also extremely attractive is the line-up of infotainment components; at the very top are the Bang & Olufsen sound system and MMI Navigation plus. The super-slender seven-inch monitor extends from the instrument panel electrically. The user terminal has a rotary/push button control that is designed as a touchwheel with MMI touch - the touchwheel's top surface is a touch-sensitive pad for inputting alpha and numeric characters.

The Audi connect concept aims to network the driver with his or her environment. In the new Audi A3 Cabriolet, this function - which supplements MMI Navigation plus - provides a connection to the Internet, and whenever possible via the fast LTE transmission standard. The integrated WLAN hotspot lets passengers use their mobile devices to surf and e-mail freely.

The system brings Internet services from Audi connect into the car for use by the driver - from navigation with Google Earth images and Google Street View to online traffic information and services such as Facebook and Twitter. The latest service from Audi connect is parking information; it shows available parking spaces in parking and underground garages and parking lots.

Drivetrain
The three newly developed engines being offered in the Audi A3 Cabriolet at its launch all emphasize the car's sporty character. The two TFSI engines produce 103 kW (140 hp) and 132 kW (180 hp) from 1.4 and 1.8 liters of engine displacement, respectively. The 2.0 TDI develops 110 kW (150 hp); Other engines will follow - ranging from the 1.6 TDI with 81 kW (110 hp) to the 2.0 TFSI, which will power the Audi S3 Cabriolet with 221 kW (300 hp). All engines in the new Audi A3 Cabriolet combine the technologies of direct injection, turbocharging and a start-stop-system.

On average, the three engines offered at market launch have twelve percent better fuel economy than the engines in the previous model - and they do so while improving driving performance. The 1.4 TFSI, for example, accelerates the new Audi A3 Cabriolet from 0 to 100 km/h (62.14 mph) in 9.1 seconds, yet its combined fuel consumption value is 5.0 liters fuel per 100 kilometers (47.04 US mpg) and its CO2 emissions are 114 g/km (183.47 g/mile). Also contributing to this efficiency is Audi cylinder on demand (COD) technology, which deactivates two of the engine's cylinders in low load conditions.

The new Audi A3 Cabriolet also features state-of-the-art technology in power transmission. At its launch, the 1.8 TFSI is being offered with a seven-speed S tronic; together with the Audi drive select vehicle dynamics system, it offers a free-wheeling function that further improves fuel economy. The 1.4 TFSI and 2.0 TDI are each paired with a manual six-speed transmission. This will be followed by the quattro all-wheel drive system - another new feature and USP of the compact Cabriolet.

Chassis
The chassis of the new Audi A3 Cabriolet impresses with sophisticated technology that delivers sporty handling, superior vehicle safety and a high level of comfort. Some of the components of the MacPherson front suspension are made of aluminum; the four-link rear suspension handles longitudinal and transverse forces separately. The power steering system features an efficient electromechanical drive.

The ESC stabilization control system integrates an electronic limited slip differential - this makes handling even smoother and safer at the vehicle's cornering limits while driving fast through curves. The brakes are powerful and durable. Wheel sizes range from 16 to 19 inches, and tire sizes range up to 235/35. Two versions of the sporty chassis are offered; the sport suspension lowers the body 15 millimeters (0.59 in), while the S line sport suspension is 25 millimeters (0.98 in) lower.

High-end options in the new Audi A3 Cabriolet include the Audi drive select vehicle dynamics system (standard on the Ambition line). The driver can use this system to modify engine management, power steering, S tronic and air conditioning operation over several modes. This control also extends to optional systems such as the adaptive suspension control system Audi magnetic ride, adaptive cruise control, adaptive light and progressive steering whose steering gear ratio becomes increasingly more direct when turning.

The new Audi A3 Cabriolet will come off the assembly line at Audi's plant in Gyor, Hungary, which Audi has expanded with an investment of more than 900 million euros. Sales begin this autumn in Germany, and first deliveries will be in the first quarter of 2014. The base price for the 1.4 TFSI (103 kW with cylinder on demand technology) is 31,700 euros. Many sporty and comfort/convenience options round out the standard features; they include the deluxe key and S sport seats with integrated head restraints and diamond topstitching in the shoulder area.

Audi S3 Cabriolet (preliminary data)
In the top S3 version, which will follow shortly after the car's initial launch, the compact Cabriolet delivers very sporty driving performance. The 2.0 TFSI engine produces 221 kW (300 hp) and transfers 380 Nm (280.27 lb-ft) of torque to the crankshaft. With a six-speed S tronic, the car completes the sprint from 0 to 100 km/h (62.14 mph) in 5.4 seconds. The combined fuel consumption of the four-cylinder turbo is 7.1 liters per 100 kilometers (33.13 US mpg).

The quattro drivetrain operates with an electronically-controlled hydraulic multi-plate coupling. The body was lowered 25 millimeters (0.98 in), and 17-inch brakes are mounted behind the 18-inch wheels. 19-inch wheels are also available in conjunction with Audi magnetic ride. Progressive steering is standard.

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Audi A3 e-tron Concept, 2013

 

 

•  Audi A3 e-tron Concept, 2013

The four-cylinder engine is state of the art in every respect - its low frictional losses, its turbocharger, its intercooler and its thermal management. One special feature is the way the exhaust manifold is integrated into the cylinder head. After a cold start, it brings the coolant swiftly up to operating temperature. At high loads the water jacket lowers the temperature of the exhaust gas.

The Audi A3 Sportback e-tron from Audi is a latest-generation plug-in-hybrid car. The premium compact vehicle will go on sale from 2014 and is a genuine Audi. It combines sporty power with impressive efficiency and abundant driving enjoyment with unrestricted everyday utility. The A3 Sportback e-tron offers 150 kW (204 hp) of system power and achieves average consumption of only 1.5 liters per 100 km (156.81 US mpg) of gasoline. In the electric mode its operating range is up to 50 kilometers (31.07 miles), with the TFSI engine adding a further 890 km (553.02 miles).

From 0 to 100 km/h (62.14 mph) in 7.6 seconds and a top speed of 222 km/h (137.94 mph) - the Audi A3 Sportback e-tron adds an extra highlight to the sporty character of the compact premium car line. In accordance with the ECE standard for plug-in hybrid vehicles, its average CO2 emissions are a mere 35 grams per km (56.33 g/mile) - equivalent to consumption of 1.5 liters of fuel per 100 km (156.81 US mpg).

Thanks to the ultra lightweight construction philosophy of Audi, the unladen five-door model complete with all electrical components weighs less than 1,580 kilo-grams (3,483.30 lb), with space for five occupants and plenty of cargo. It comes complete with all the brand's strengths - elegant design, sporty chassis, top-notch ergonomics, excellent build quality and an extensive choice of high-end assistance and infotainment systems.

The 1.4 TFSI combustion engine is one of the most modern power units of Audi. Inside the engine compartment, looking in the direction of travel, it is positioned a few centimeters further to the right than usual, to create space for the high-voltage components. Its crankcase is made from diecast aluminum, weighing little more than 100 kg (220.46 lb).

Developing 110 kW (150 hp) and 250 Nm (184.39 lb-ft), the 1.4 TFSI is a powerful unit. It supplies peak torque across the entire speed range from 1,750 through 4,000 rpm, thus harmonizing excellently with the electric motor. The maximum of 330 Nm (243.40 lb-ft) is available virtually from the off, and is maintained constantly across a broad speed range up to about 2,200 rpm. Its maximum output is 75 kW. The system output of the A3 Sportback e-tron is 150 kW (204 hp), and system torque is 350 Nm (258.15 lb-ft). With the combination of electric motor and combustion engine, an overall operating range of up to 940 kilometers (584.09 miles) is possible. And its road performance is unwaveringly sporty: It takes a mere 4.9 seconds to sprint from 0 to 60 km/h (37.28 mph).

The electric motor is a permanently excited synchronous machine. It weighs 34 kilograms (74.96 lb) and is liquid-cooled via a cooling jacket in the stator. The electric motor is located between the engine's dual-mass flywheel and the newly developed separating clutch, the K0 clutch. When the TFSI starts, it is tow-started by the electric motor via the clutch. As soon as the former has achieved the same speed as the electric motor, the clutch is opened. This smooth, highly precise process takes place within half a second.

Together with the K0 separating clutch, the electric motor is integrated into a newly designed six-speed e-S tronic, which transfers the power to the front wheels. Like all Audi dual-clutch transmissions, it consists of two subsidiary transmissions that are served by the two multi-plate clutches K1 and K2. Gears are shifted by switching the clutches. This takes just a few hundredths of a second and happens without any noticeable interruption in propulsive power.

Depending on the level of charge, the voltage ranges between 280 and 390 volts. The battery consists of 96 prismatic cells arranged into eight modules of twelve cells each. Including the electronic components - the battery management controller and the battery junction box - the battery system weighs 125 kilograms (275.58 lb). Its housing is bolted to the vehicle floor at five points, and the lower shell is made from aluminum.

An elaborate liquid cooling system ensures that the battery is kept within a suitable temperature range during operation. Drivers of the Audi A3 e-tron will be able to start electrically in hot summer conditions and at sub-zero winter temperatures alike. Four cooling plates regulate the temperature of the high-voltage battery's eight modules. The cooling system represents a separate low-temperature circuit in the car and runs on a separate cooler housed in the engine compartment. If need be, it can be connected to the air conditioning system and even divided into two subsidiary circuits.

In the event of a crash sufficiently severe to trigger the belt tensioners or airbags, the entire system is disconnected from the power supply. The flat-shaped battery is installed under the rear bench seat - an area where the high-strength and ultra-high-strength steel components of the occupant cell form an especially strong structure. Its housing and interior structure are equally of a very sturdy design.

The 12-volt battery for the low-voltage consumers and the 40-liter (10.57 US gallons) fuel tank are located above the rear axle. Both components barely impinge on the trunk of the A3 Sportback e-tron - in the standard configuration it measures 280 liters (9.89 cubic ft) and 1,120 liters (39.55 cubic ft) with the rear seat backs down.

Audi supplies the A3 Sportback e-tron with a universal charging lead as standard. The customer can interchange the connecting plugs so that the lead can be used both with domestic power sockets and with industrial power sockets, for full charging performance. These connecting plugs are country-specific in design, so that the A3 Sportback e-tron can be recharged anywhere in the world.

For easy use at home, the charging lead can be clipped into a wall-mounted holder. Even this holder has an Audi design, and as well as being a convenient way to store and use the lead, it is lockable. The charging equipment is thus protected against theft even when kept outdoors.

The charging lead supplies the car with alternating current from the grid via the charging connection, which is in the Singleframe grille behind the fold-out four rings. As well as a status LED, the unit includes two pushbuttons allowing the user to choose between timer-controlled charging and immediate charging. In the car, the alternating current fed in by the charger is converted into direct current for the battery.

From an industrial power socket, it takes slightly more than two hours to charge the battery fully. From a normal domestic power socket in Europe, the charging process takes about three hours and 45 minutes. Audi is working intensively on a joint project with a supplier of renewable power, because electric driving only makes ecological sense if such power is available.

Another medium-term project of Audi is automatic charging without physical contacts, referred to as Audi wireless charging. Here the charging process involves an alternating magnetic field between the stationary charging pad on the ground and the mobile charging pad in the car, similar to the principle used by an electric toothbrush.

The power electronics, located in the engine compartment, then convert the stored direct current into three-phase current for the electric motor. It has six high-performance transistors for this task. The power electronics, which include a DC/DC converter for connecting up the vehicle's 12-volt electrical system, are compact and light in weight. They have a total volume of 8 liters (0.28 cubic ft) and weigh 10 kilograms (22.05 lb). Together with the charger, it is incorporated into the same cooling circuit as the traction battery.

There are yet more special components for electric driving. The air conditioning compressor has an electric drive integrated into the high-voltage network. A thermoelectric heating element and a gasoline-powered auxiliary heater round off the interior heating system.

The hybrid management is configured to function in harmony with the electric motor. Up to medium loads the electric motor, now functioning as alternator, largely handles retardation. The energy that it recovers is fed into the traction battery. The wheel brakes only become active if the driver presses the pedal more forcefully.

Braking recuperation is just one of several operating statuses of the Audi A3 Sportback e-tron. The car is almost always started electrically, even at very low temperatures, in extremely hot conditions or when battery charge is very low. The electric motor's high torque enables the sporty compact car to accelerate away powerfully. It goes from 0 to 60 km/h (37.28 mph) in 4.9 seconds - with quiet but forceful propulsion.

In the electric mode the Audi A3 Sportback e-tron can travel at up to 130 km/h (80.78 mph) - it could go faster, but that would not be efficient. When traveling at a constant 100 km/h (62.14 mph), generally only the electric motor is active provided there is sufficient energy in the battery. As soon as the driver steps hard on the accelerator, for instance to overtake, and causes the pedal to go beyond a certain resistance point, it prompts the TFSI to cut in via the K0 separating clutch. In the boost mode the Audi A3 Sportback e-tron accelerates with all of 350 Nm torque (258.15 lb-ft).

When the driver releases the accelerator at high speed, the hybrid management enters the gliding mode. Now both drives are entirely deactivated and are no longer developing braking torque. When stepping off the accelerator at medium and low speeds, the system recovers energy through coasting recuperation; braking recuperation then becomes active when the brake pedal is pressed, except if a full brake application is needed.

The driver has several ways of actively managing the vehicle's response. They can choose from three programs using a button in the driving area and the e-S tronic selector lever. The EV characteristic map gives priority to electric drive, whereas the Audi A3 Sportback e-tron behaves very sportily in the S program. The hybrid hold mode can be selected via a menu in the MMI. This mode preserves the electrical energy stored in the battery for later use. In addition, the driver can specify detailed settings in the Audi drive select control system. Different stages of coasting recuperation are permanently assigned to the individual Audi drive select modes. Within certain ranges, this enables the driver to influence how the battery is charged while on the move.

The Audi A3 Sportback e-tron displays supply precise information about the driveline status. The powermeter in the instrument cluster shows the system's overall output, as well as the status of the driveline and the battery charge. The monitor for the MMI navigation plus shows the energy flows in the hybrid system. In addition, the driver information system displays the operating ranges and consumption figures for electricity and gasoline.

Under the Audi connect umbrella Audi is currently developing an entire portfolio of innovative online services for the A3 Sportback e-tron. Drivers can use these to monitor and manage a wide range of functions via their iOS or android smartphone or via a web portal.

The driver can call up the car's status - such as the battery's momentary charge status, the electric range or its current parked location. They can program charging schemes remotely from their mobile phone or computer. They have the option of starting and stopping charging or setting the charging timer and climate control scheme to reflect when they next plan to drive the car. They can thus specify in detail at what time on what days they want to drive off with the battery fully charged.

The climate control planner, the third aspect, works similarly. The owner of an Audi A3 Sportback e-tron can for instance specify a target temperature for the interior according to a differentiated timetable. Adjusting the climate in advance while still hooked to the power socket is much more efficient than when driving electrically, because it does not then constitute a drain on the car battery and thus optimizes the electric range. In addition, it also adjusts the drive components to the appropriate temperature for the conditions. Finally, the web portal gives the owner the chance to check their trip data, e.g. power consumption, distance driven and speed.

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Audi A1 quattro, 2013

 

 

 

 

•  Audi A1 quattro, 2013

Audi is crowning its successful A1 model series with an exclusive top-of-the-line model. The dynamic Audi A1 quattro, limited to just 333 units, moves to the head of the compact class. Its two-liter, turbocharged engine produces 188 kW (256 hp) and 350 Nm (258.15 lb-ft) of torque, which is delivered to all four wheels. The Audi A1 quattro sprints from zero to 100 km/h (62.14 mph) in 5.7 seconds and has a top speed of 245 km/h (152.24 mph).

The Audi A1 quattro is powered by the 2.0 TFSI engine. The 1,984 cc, four-cylinder engine combines gasoline direct injection with turbocharging in the classic Audi manner. Among its highlights are the adjustable intake cam shaft and the two balance shafts, which ensure smooth operation. Maximum torque of 350 Nm (258.15 lb-ft) is continuously available between 2,500 and 4,500 rpm, and peak power (188 kW/256 hp) is developed at 6,000 rpm.

Every detail of the sporty, sonorous four-cylinder engine has been optimized for high performance and low fuel consumption. Common rail injection, a turbocharger with intercooler and a regulated oil pump are just a few examples. The Audi A1 quattro is expected to consume on average less than 8.5 liters of fuel per 100 km (27.67 US mpg). Yet it performs like a top-notch sports car: The standard sprint takes just 5.7 seconds, and top speed is 245 km/h (152.24 mph).

The 2.0 TFSI delivers its power to the quattro permanent all-wheel drive system via a precisely shifting six-speed transmission, bringing Vorsprung durch Technik to the small-car class. The heart of this system is an electronically controlled, hydraulically actuated multi-plate clutch whose package of plates rotates in an oil bath.

During normal driving, the clutch sends most of the engine's power to the front wheels. If traction decreases there, the clutch can transfer torque steplessly to the rear axle in just a few milliseconds by forcing the packages of plates together by a defined amount. A pressure reservoir helps the electric pump to develop the oil pressure. If a wheel on one of the axles should slip, it is braked by the electronic differential lock (EDL).

The placement of the multi-plate clutch at the rear axle provides for a harmonious distribution of the axle loads, and the chassis of the Audi A1 quattro has been adapted to the dynamics of the drivetrain. It is much more tautly tuned than that of the production model. The front suspension is a McPherson construction; a four-link axle is used at the rear. The sensitive and efficient electrohydraulic power steering has a sporty, direct 14.8:1 steering ratio.

The Audi A1 quattro rolls on 8.0 J x 18 cast alloy wheels. They are Glacier White, feature an exclusive turbine design and are fitted with 225/35-series tires. The internally vented front brake discs measure 312 millimeters (12.28 in) in diameter and are gripped by black calipers. The ESP stabilization program includes a sport mode and can be switched off entirely for a trip to the race track, for example.

One look is all it takes to see that the Audi A1 quattro is a very special vehicle. It is available only in Glacier White metallic, and its roof is painted high-gloss black. The front bumper is muscular, the frame and grate of the single-frame grille are high-gloss black. The curved bars in the headlights - the wings - are red. The grille, the roof arch and the rear hatch sport quattro badges.

The rear windows are tinted; the roof flows into a large, two-color wing. The color black accentuates the rear hatch and the diffuser. The LED rear lights are tinted; the rear bumper sports a distinctive look. The exhaust system terminates in two polished dual tailpipes on the left and the right, each measuring 100 millimeters (3.94 in) in diameter. The Audi A1 quattro is 3,987 millimeters (13.08 ft) long, 1,740 millimeters (5.71 ft) wide and 1,416 millimeters (4.65 ft) tall, making it somewhat longer than the model on which it is based. Luggage capacity is 210 liters (7.42 cu ft); folding down the rear seats increases this to 860 liters (30.37 cu ft).

Cool, sporty black dominates the interior of the Audi A1 quattro. The seats and the armrests on the doors are covered in Silk Nappa leather with contrasting red seams. The S sport seats up front have pronounced bolsters, integrated head restraints and a quattro badge on the backrest covers. The seats feature multi-way adjustment. The lower section of the center console shines in high-gloss black; the footrest and the pedal caps are made of brushed stainless steel. Red seams frame the floor mats, and the door sill trims bear A1 quattro badges.

The instrument cluster has a number of eye-catching features, including white needles, a red tachometer, the quattro logo and the color display for the driver information system. The multifunction sport steering wheel is flattened at the bottom, wrapped in leather with contrasting red stitching and sports the car's serial number. The shift lever knob is made of aluminum. Many control elements have an aluminum-look finish.

The Audi A1 quattro  available from the second half of 2012 and supplied to customers with a full range of equipment. It includes many features taken directly from the luxury class, including xenon plus headlights, high-beam assistant, adaptive brake lights, LED interior lighting package, light and rain sensor, automatically dimming interior mirror, rear parking system, automatic air conditioning, alarm system, storage package, convenience key and cruise control.

The infotainment equipment likewise leaves nothing to be desired. It includes a CD changer, a digital radio tuner, the Audi music interface and MMI navigation plus. The Bose sound system drives 14 speakers with 465 watts of power; the woofers in the doors are indirectly lit with light guide LEDs. Audi connect uses the Bluetooth online car phone to connect to the Internet and deliver special web services, including Google Earth, to the car. Passengers can also connect their mobile devices to the integrated WLAN hotspot.

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