Audi A8 4.2 TDI quattro
Majestic design, hand-crafted quality, systematic lightweight edifice and plethora of high-end technologies: Audi unveils the comprehensively advanced Audi A8, its successful flagship, at the IAA in Frankfurt am Main. The engine mechanism of Audi A8 has once again emerged as more powerful and effective; new assistance systems and the innovative Matrix LED headlights make driving more calm than ever.
The Audi A8 firmly places Audi among the innovation premiers in the global luxury map encompassing the most challenging automobile category. One of the greatest strength of the Audi A8 big sedan is its low weight. The Audi A8 3.0 TFSI with the normal wheelbase carries a curb weight of just 1,830 kilograms (4,034.46 lb.) – best-in-class for models with all-wheel drive.
The significant feature in Audi A8's lightweight construction is the body, which with the exception of the B-pillars is made entirely of aluminium. An Audi Space Frame (ASF) design, Audi A8 tips the scales at just 231 kilograms (509.27 lb.), approximately 40 per cent less than a comparable steel structure. The ASF body of Audi A8 also makes it possible to lessen 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 the same, endowing the Audi A8 the sportiest flavour in the segment. The A8 L achieves an additional 13 centimetres (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 enhancing the Audi A8, Audi invested detailed 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 litters (18.36 cubic feet) and can be loaded substantially better thanks to the altered layout. The optional power trunk closing assist of Audi A8 means that the entire car can be locked at the touch of a button.
Dynamic, yet tunefully sophisticated – the robust sedan's concept has become even more animated. The engine hood od Audi A8, the single-frame grille and the front bumper are even more sculptured and detailed; the lower edge of the headlights is straight. In the German market, LED headlights are standard in all models with a V8 engine.
Audi A8 also offers the headlights with optional Matrix LED technology, which sets new yardsticks with respect to design and technology. With these headlights, the high-beam unit of Audi A8 is made up of 25 individual segments. The small light-emitting diodes in Audi A8, 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 of Audi A8 to react precisely to other cars, which it recognizes using a camera, and always illuminate the road brightly. Additional features of the new headlights included in Audi A8 are the intelligent cornering light, new-look daytime running lights and dynamic turn signals.
The LED lights attached at the rear of the new Audi A8 have also become flatter and are combined together by a continuous chrome strip. In all models except the S8, the redesigned bumper includes 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 colours, including five new ones.Wheels are available in sizes up to 21 inches with 275/35-series tires.
New Engines: Additional Power Mixed with Greater Competence
Apart from the the S8, A8 L W12 Quattro and A8 hybrid models, the new Audi A8 will be available in the German market with two TFSI gasoline engines and two TDI units.
A package of measures has been implemented to reduce fuel intake by as much as ten per cent, and most engines have also witnessed an enhancement in power. All engines already meet the specific needs of the Euro 6 standard.
Under the hood of the A8 3.0 TFSI Quattro there is a V6 engine whose mechanical compressor can be deactivated. Power output has now reached 314.29 PS, an enhancement of 20 PS. The V6 hastens the standard wheelbase version of the sedan from 0 to 100 km/h (62.14 mph) in 5.7 seconds. Top speed is electronically confined to 250 km/h (155.34 mph).
It consumes on average 7.8 litres per 100 kilometres (12.82 km/l), corresponding to 183 grams CO2 per kilometre (294.51 g/mile).
The twin-turbo V8 in the A8 4.0 TFSI Quattro now generates 441 PS an increase of 15 PS than the predecessor. Key performance details: reaches from 0 to 100 km/h (62.14 mph) in 4.5 seconds; average fuel consumption 9.1 litres per 100 kilometres (10.98 km/l), corresponding to 213 grams CO2 per kilometres (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 economy level of 16.94 km/l, corresponding to 155 grams CO2 per kilometre (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 8 PS to 261.57 PS. 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 improved its output by a whopping 34.47 PS to 390.33 PS. Powered by the powerful V8 diesel, the A8 completes the standard sprint in 4.7 seconds, and average fuel economy is 13.51 km/l (31.79 US mpg), which corresponds to 194 grams CO2 per kilometer (312.21 g/mile).
Powertrain: Tiptronic and Quattro
All versions of the model series are attached with a fast and smooth-shifting, eight-speed tiptronic. The transmission, which can be operated electronically using a sophisticated selector lever as well as paddles on the steering wheel, works in combination 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 channelized 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 derives its sporty character chiefly to the advanced chassis. Axle load distribution is stable, and all wheel control arms are aluminium. The Audi drive select mechanism, which allows the driver to effect 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 utilises an effective electromechanical drive that lowers fuel intake and also paves the way for 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 fibre ceramic brake discs are available for V8 models, the S8 and the A8 L W12.
One new component of Audi's lightweight construction technology is the 9J x 20 aluminium-technology wheels. These are rooted on forged support wheels that are bridged via a special process to a ten-spoke design element of high-strength polymer. This technology gives designers the liberty to use large-area, yet three-dimensional designs.
Graceful and Airy Interior
The interior of the Audi flagship charms with its graceful, airy lines. The instrument panel is lean and low, and below the windshield there is a long arc - the wrap-around. Space is plentiful in every seat. The broad range of options for the front seats includes ventilation and massage purposes with five programmes and strengths each.
Audi extends electrically adjustable, individual rear seats as an option for the A8 and the A8 L. The A8 also comes with a continuous, leather-covered centre console. Armed with every available luxury feature, the relaxation seat with electrically adjustable footrest is the first-class solution here.
Among the slew of 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 makes no compromise in matters of superior quality. All of the product materials in the new A8 have been carefully identified and utilised. Diligently 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 specially natural-looking, soft and breathable.
A new range of options for seat wrappings, inlays and interior colours is available in many aspects. Additional features include the woods fine grain poplar brown-silver and fine grain ash natural gold-brown, whose fine pores are poured with small amounts of silver and gold, respectively. Audi design selection offers customers an aesthetic pre-selection of exclusive materials and colours for the interior, including sycamore grey, marble grey and vermont brown for the S8. The Audi exclusive range delivers an even greater degree of individualization for particularly discerning customers.
As is standard for Audi, the brand's flagship features portray easy controls despite the rich functions. The driver information system with colour seven-inch display and the eight-inch MMI monitor are standard. If the optional MMI navigation plus is connected, the control element on the centre tunnel console includes a touchpad. The MMI touchpad equips the driver to control several functions; for example, the navigation destination can be entered by tracing the letters on the pad.
Audi connect including car phone can be fitted as an ideal extension of MMI navigation plus. It attaches the new A8 to the Internet via an integrated UMTS module. Owing to the WLAN hotspot, passengers can surf and access e-mail at their will via their mobile devices. For the driver, the system delivers the bespoke 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.
In the area of multimedia, the Bang & Olufsen Advanced Sound System that despatches over 1,400 watts of power to 19 speakers ensure fairly good sound. The rear seat entertainment mechanism for the passengers in the back imbibes two large displays, Bluetooth headphones and a DVD player, among other things.
The MMI navigation system is skilfully networked with additional systems on board the Audi A8, including the optional adaptive cruise control with stop&go function. The radar-based cruise control itself is allied with an expanded version of the standard Audi pre sense basic safety system, as is another optional system, Audi side assist. The camera-based speed limit display is also available.
New Assistance Mechanism
New assistance mechanisms have made their debuts in the new A8, including Audi active lane assist, which ensures slight steering alterations when necessary, and the park assist system with 360° display, which handles steering when parking. Another new system is the head-up display, which is gracefully incorporated into the instrument panel and provides important information into the driver's field of vision on the windshield. The night vision assistant identifies not only pedestrians, but also larger animals and warns the driver about them.
The new Audi A8 is all set to arrive at German dealerships in November. Despite the more lavish list of equipment and more powerful engines, there is only nominal price increase. The new Audi model will be available in Germany starting at 74,500 euros (INR 6258804).
Audi A8 L W12 Quattro (Preliminary Data)
The Audi A8 L W12 Quattro is armed with a powerful gasoline engine that is particularly short and lightweight thanks to its W layout. The normally aspirated, 6.3-liter engine produces 506.9 PS, yet is very smooth. The acceleration from 0 to 100 km/h (62.14 mph) is reached in just 4.7 seconds. Average fuel economy is a moderate 8.54 km/l (20.10 US mpg), which corresponds to 270 grams CO2 per kilometer (434.52 g/mile) and is thus the trend-setter for twelve-cylinder sedans. A newly developed COD system is active at low load. It momentarily deactivates the fuel injection and ignition for six of the twelve cylinders.
As the top model in the series, the Audi A8 L W12 quattro comes exclusively with the long wheelbase. Its deluxe features include MMI navigation plus with MMI touch, Audi connect including car phone, LED headlights, power door closing assist, convenience key, four-zone automatic air conditioning, individual rear seats and noise-insulating glazing. Innovative absorber foam in the tires lessens rolling noise.
For the first time Audi has also provided Active Noise Cancellation (ANC) in the W12 so that the top model preserves its quiet poise even when the Audi cylinder on demand system is running in efficient six-cylinder mode.
The A8 Audi exclusive concept has been targeted at customers searching for something very special. The limited-edition package (50 cars) is available for the A8 L W12 Quattro. Leather from Italian furniture manufacturer Poltrona Frau in the colour Agatha cognac rules the interior. The inlays are made of fine grain olive ash natural silver brown. Its grey-brown shade complements the granite grey piping on the seats. Audi puts especial emphasis on the colour Tierra Del Fuego for the exterior finish.
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