Audi's S6 is a perennial favorite of power-mad enthusiasts and sleeper-lovers alike. It just doesn't look as crazily fast as it really is, and that's just part of what makes the 2011 Audi S6 such a great car. MotorAuthority rates the S6 9 out of 10 overall.
Powered by a ferocious 5.2-liter V-10 engine nestled under the hood, the 2011 S6 is good for 435 naturally-aspirated horsepower from the factory. That 5.2-liter V-10 is related to the 5.0-liter V-10 found in the Gallardo, too, adding a bit of exotic to the otherwise stately sedan. Channeling the power through a six-speed automatic takes some of the edge off the experiences, but it's a very solid unit that handles its duties competently, and does nothing to bridle the beautiful sound the V-10 makes.
Add to the awesome powerplant some great steering--well-weighted and responsive--and very powerful brakes, and you've got most of the makings of a truly impressive sport sedan. The suspension finishes the puzzle, damping body movements adroitly, yet not turning the ride into a home dentistry experiment.
The 2011 S6 is a pricey vehicle, but you'll get value for your money: the interior is, like the A6 it's based on, very good throughout, from materials to design to fit and finish. The controls and buttons can be a bit complex, but once the layout is learned, it's at least logical.
A wide range of standard equipment is upgradeable with an extensive list of options, making the S6 a flexible, configurable purchase, though its high base specification means you may not need to add anything.
For a detailed examination of the 2011 Audi S6 and its A6 counterpart, read the full review at TheCarConnection.