The Audi RS7 is pretty impressive in factory trim with its 4.0-liter V8. The stock engine produces 553hp and 516 lb.-ft. of torque at 5,700 RPM. It is a 32-valve, dual overhead camshaft, all aluminum (block and cylinder heads), engine with direct fuel injection. This particular car has had a turbocharger upgrade (from TTE) and is equipped with a high performance exhaust system from Miltek/APR and an APR tuner.