"Audi's spin doctors seem to be having trouble with this one. They tell us the S6's 5.2-liter V-10 is the "most unstressed in the class," that it has the lowest specific output among its competitors. On the other hand, Audi makes great play of this V-10's relationship with the one in the Lamborghini Gallardo. An unstressed supercar engine? Say what?
Only one way to find out: Hit the gas. There's never a moment's doubt an epic reserve of low-down torque is at play here, and the direct fuel injection wastes no time in deploying it. The six-speed auto transmission flicks the changes the instant the tach needle kisses the big seven. It ratchets speed in an effortless torrent as we careen toward the 155-mph limiter."
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