The Mercedes-Benz AMG S63 4matic Coupe is a high-performance luxury coupe from the German automaker Mercedes-Benz. It is powered by a 5.5-liter V8 engine, producing 577 horsepower and 664 lb-ft of torque, mated to a seven-speed automatic transmission. It comes equipped with AWD and a host of performance-enhancing features, including active suspension and a limited-slip differential. The AMG S63 is also packed with luxurious features, such as a fully-loaded interior, dual power front seats, and a panoramic sunroof.