Competing in the fullsize sedan segment, the 2017 Mercedes Benz AMG S 63 Sedan is a direct competitor to the Porsche Panamera Turbo S, the Maserati Quattroporte GTS, and the relatively less powerful Audi S8 Plus. The AMG S 63 Sedan starts off at an MSRP of $144,700, It is offered with a 5.5L turbocharged V8 engine and a 7-speed automatic transmission, producing 577 horsepower and 664 lb-ft of torque. Through this powertrain, the AMG S 63 Sedan manages a 0-60 of 3.4 seconds and a combined fuel economy of 18 MPG.