2012 Audi S6 Audi presents the S6, S7 Sportback and S8 high performance models Newly-developed 4.0-Liter V8 with up to 520 horsepower Ground-breaking efficiency with systems such as “cylinder on demand” INGILSTADT : August 31, 2011 - Audi will present its new S models for the first time at the 2011 Frankfurt Auto Show (IAA). These models are characterized by power combined with appropriately low fuel consumption. The engine down-sizing...