Please pay attention, because this gets complicated. Audi’s sedan range consists of A-cars in four sizes: A3, A4, A6, and A8. The S3, S4, S6, and S8 are faster, sportier versions. Even quicker, more focused vehicles devised by subsidiary Quattro GmbH are designated RS.

The previous-generation S6 had a V-8 engine developing 340 horsepower. The twin-turbo RS 6 started life with 450 horsepower and ended up with 480. In the interim, Audi complicated things by endowing the smaller S4 with the 340-hp, 4.2-liter V-8 and the RS 4 with a direct-injection V-8 that makes 420 horsepower. The 2005 Tokyo show saw the debut of the S8, with a Lamborghini-derived V-10 and 450 horsepower.

All of this made us wonder how the new S6 would be positioned. After all, it has to upstage the S4 but stay below the S8 in the corporate pecking order. At the Detroit show in January, we found out. The S6 has the S8’s 5.2-liter V-10, but with its maximum output reduced by 15 horsepower to 435. And, yes, there will be a new RS 6, which is more than a year away and promises to outgun the 500-hp BMW M5.

Audi will tell you this is all logical, that each model has a specific purpose and its own niche in the market. In the case of the S6, Audi maintains it is not just another contender in the German horsepower race. It’s intended as a fast touring car rather than an out-and-out road racer and is purposely understated so it looks hardly any different from the A6.

The S6 certainly avoids the visual excess of some super-powerful sedans. There is little outward differentiation from the A6: bright vertical struts for the deep single-frame grille, flared wheel arches and rocker panels, special 19-inch wheels, and daytime running lights consisting of two rows of LEDs under the front bumper. Audi would have you know that there are 10 LEDs in total, corresponding to the engine’s cylinders, although the discreet V-10 badges on the car’s flanks are another reminder.

There is also nothing intimidating about driving the S6. The engine, which makes a strong, gutsy noise and should propel the car to 60 mph in 4.8 seconds, is docile when you want it to be; the six-speed Tiptronic automatic transmission works easily, whether controlled by the steering-wheel paddles or left to its own devices.

Like all Audi high-performance cars, the S6 has four-wheel drive. After years of promoting the even front-to-rear torque split of the Quattro system, Audi has given the S6 (and the S8 and latest RS 4) a 40/60 rear-biased distribution. This attempt to match the handling characteristics of its rear-drive rivals works — to a point. In a session on a tight, twisty test track, the S6 proved more agile than its predecessor but still felt front-heavy and understeered when being hustled hard; that’s not surprising, really, because that’s a big engine nestled between the headlights. On public roads in Germany, slick from recent rain, we were reminded, however, of the security provided by four-wheel drive in a powerful car.

The V-10 is basically a Lamborghini Gallardo powerplant that’s been altered for use in a front-engine sedan. The accessories are tidier to fit in the tighter engine bay, the bore has been increased (displacement is 5.2 liters versus 5.0), and the rev range was curtailed. When installed in the S8, the V-10 makes 450 horsepower, but thanks to different intake and exhaust systems, the S6 makes do with 435.

Whereas the S8 is air-sprung, the S6 has steel springs and nonadjustable shocks. It also does without Audi’s dynamic ride control, a cross-car connection of the shock absorbers to maintain body control, that was introduced with the RS 6 and is fitted to the RS 4. The S6 is uncompromisingly stiff and jolts and bounces uncomfortably over bumps. This spoils a car that is otherwise admirably suited to its role as a fast grand tourer and negates Audi’s claim that the S6 is “the most refined sports sedan in its segment.” Mind you, neither its segment nor its direct competitors are very clear. The Jaguar S-type R, cheaper and not quite as quick, is smoother-riding, as is the more powerful and expensive BMW M5.

The S6 will be available in the U.S. at the end of the year with an estimated price of $80,000, about 10 grand more than the smaller, hard-core RS 4. In Europe there is also an S6 Avant wagon, but that isn’t planned for sale on this side of the pond.



2007 AUDI S6
Vehicle type: front-engine, 4-wheel-drive, 5-passenger, 4-door sedan
Estimated base price: $80,000
Engine type: DOHC 40-valve V-10, aluminum block and heads, direct fuel injection
Displacement: 318 cu in, 5204cc
Power (SAE net): 435 bhp @ 6800 rpm
Torque (SAE net): 398 lb-ft @ 4000 rpm

Transmission: 6-speed automatic with manumatic shifting
Wheelbase: 111.9 in
Length/width/height: 193.5/73.4/57.0 in
Curb weight: 4250 lb
Performance ratings (C/D est):
Zero to 60 mph: 4.8 sec
Standing ¼-mile: 13.3 sec
Top speed (governor limited): 155 mph
Projected fuel economy (mfr’s est):
European urban cycle: 12 mpg
extra-urban cycle: 24 mpg
combined: 18 mpg

The S6 is uncompromisingly stiff and jolts and bounces uncomfortably over bumps. This spoils a car that is otherwise admirably suited to its role as a fast grand tourer and negates Audi’s claim that the S6 is “the most refined sports sedan in its segment.” Mind you, neither its segment nor its direct competitors are very clear.

Audi has provided dealers with pricing for its 2007 S6 and S8 sedans. The 435 horsepower S6 will start at $72,000 MSRP. A "technology package" will cost $3,900, a warm weather package $1,900, adaptive cruise control $2,000, rear airbags $350, and carbon fiber inlays $400. Meanwhile, the 450 horsepower S8 will cost $92,000 MSRP. A premium package will cost $3,500, rear seat climate control $600, adaptive cruise control $2,100, Bang & Olufsen audio $6,300, solar sunroof $750, and carbon inlays $500.

FRANKFURT -- Audi AG said today that it would start production in India of its A6 model sometime in autumn 2007.

Production will be based at a plant in the west Indian city of Aurangabad and will involve the assembly of parts manufactured in Germany for Audi A6 cars destined for the Indian market, Audi said in a statement.

"This engagement gives us a better chance to tap the market. Through the delivery of the car parts, our domestic sites will also benefit," Audi board member Jochem Heizmann said.

Audi said it also planned to set up a distribution company based in Mumbai at the start of 2007 and would expand its Indian dealer network to at least eight exclusive Audi dealers in coming years. At present it has three dealers in the country.

Volkswagen has said in the past it sees growing markets such as India and Russia as vital for its long-term future and aims to produce up to 110,000 vehicles a year in India from 2009.