The Audi S7 is a mid-sized luxury sportback sedan manufactured by the German automaker Audi. The Audi S7 was launched in 2012 and is currently in its fourth generation. It is available in various trim levels, such as the S7 Sportback, RS7 Sportback and RS7 Performance. The S7 is powered by a 4.0-litre V8 turbocharged engine, offering up to 450 horsepower and 500 lb.-ft. of torque. It has a top speed of 155 mph, and can accelerate from 0-60 mph in just 4.5 seconds.