The all-new 2013 Audi S7 is thrilling performance, stunning design, and intelligent efficiency in a package that further enhances Audi’s new A7 five-door coupe. Fitted with the new 4.0 liter TFSI® with 420 hp and 406 lb-ft of torque, the Audi S7′s twin-turbo V8 rockets the five-door coupe from 0 to 62 mph in 4.9 seconds; top speed is [...]