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The 2010 Audi S6 shares much of its body and interior with the Audi A6 lineup, and the performance S6 edition carries on the sedan's classic roofline arc and "tornado" line that trails along the lower sills, but it sits lower and has side skirts and air dams that amp up the graceful shape. The S6 adds shiny carbon-fiber trim to the cabin, and it's not as rich-looking as you might hope-but as with the A6, the S6's cabin is flawlessly assembled.
The $77,000 supersedan spits out 435 horsepower from a 5.2-liter V-10 derived from Lamborghini's engines, and it channels the high-revving engine's power through a six-speed automatic
transmission and quattro all-wheel drive. A "sport" driving mode holds gears at redline, so you savor the throaty, muffled roar of the V-10-but you'll only extract a 0-60 time of about 5.1 seconds, less than a second faster than the 3.0T. The EPA rates the S6 at 14/19 mpg.
For more on the latest S6, check out our 2010 Audi A6 page.