The current Audi A8 has been on sale since 2003 and since that time has only received a minor facelift to keep it fresh alongside the Mercedes Benz S-Class, Lexus LS and recently revealed BMW 7-series. The minor styling changes implemented during the recent facelift will have to soldier on for a few more years as the next-generation ‘D4’ A8, according to latest reports, is expected to arrive in the second half of this year, following a debut at the Frankfurt Motor Show in September.
A prototype for the car has already been spotted undergoing cold weather testing, hidden beneath the current D3 body. Tell-tale signs that the prototype was the next-generation model included extended fender flares, a stretched wheelbase and wider track.
As the rendering suggests, the design of the new model will be an evolution of the current car. The aluminum spaceframe body will carry over, saving engineers more than 150kg compared with a conventional steel body. The car’s final curb weight is expected to range from between 3,630lb (1,650kg) and 4,180lb (1,900kg) depending on the model specification. The newest rendering diverges somewhat from earlier previews of the car with new slotted lower air intakes in the front air dam and redesigned LED-edged headlights.
Distinguishing features will be a large single-frame grille, LED daytime running lights and a coupe-like profile. Speaking with Car and Driver, Audi's chief designer Stefan Sielaff explains: "The first generation was very dogmatic and product-design-like. With the second generation, the theme was 'elegance'—softer, flowing lines. The upcoming third generation will be stronger, sharper, and more precise."
Sielaff also revealed that the new A8 will be “the first of a new styling language at Audi”. In 2008 Audi released several teaser sketches of its future product lineup, including the new D4 A8.
Under the new sheet metal will be an extended version of the modular platform used in the A4, but expect to see more exotic materials such as aluminum and magnesium employed to help save further weight and improve dynamics. The base model will remain FWD but AWD variants will feature the latest quattro torque vectoring SportDifferential, which distributes drive individually between each axle and between the rear wheels for improved traction and stability. There will also be electronic control for the air-suspension, steering, pedal response and transmission systems.
The new engine lineup will feature a 250hp (186kW) 3.0L V6 TDI, a 290hp (216kW) 3.0L V6 FSI, a 340hp (253kW) 4.2L V8 TDI, a 372hp (277kW) 4.2L V8 FSI and finally a 620hp (462kW) 5.0L V10 FSI reserved for the S8. Audi is yet to decide on whether it will launch a 12-cylinder model, however there are plans for a new mild-hybrid version. There will also be more supercharged units as well as increased application of Audi’s latest valve-lift system. The 6.0L W12 engine is reportedly being phased out due to its high costs and emissions.
2009 will be very busy for Audi as the carmaker is not only launching the new A8 but also the V10-powered version of the R8, the new TT-RS, the A5/S5 Cabrio, A5 Sportback, A4 Allroad, the S4, and a Q7 facelift. The long-wheelbase version of the A8 will arrive in mid-2010.
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