Car Review. Best Detailed Walkaround 2020 AMG Mercedes Benz C63 S Sedan 2020 AMG Mercedes Benz C63 S Sedan AMG 4.0L V8 Biturbo Engine 503 HP @516 lb-ft of Torque AMG SpeedShift 9 Speed Transmission Exterior Color: Iridium Silver Metallic Interior Color: Black Napa Leather w/ Grey Accents 18 MPG City, 27 MPG Highway, 21 []