2013 Audi S6

Audi is presenting three new S models at the 2011 Frankfurt Auto Show next month, two of which, the new S8 and S7 Sportback, we’ve already seen. The third S model is the new 2013 Audi S6, which will be making its debut in both sedan and Avant wagon bodystyles but is only destined for sale in the U.S. as a sedan. The new S6 is scheduled to go on sale in Europe in the spring of 2012 and should arrive in U.S. not long after. It will come packing a twin-turbocharged 4.0-liter V-8 rated at 420 horsepower and 405 pound-feet of torque, the latter coming on from just 1,400 rpm. You may recall...