The 2017 Mercedes-Benz AMG S 63 is available as a 4-door, 5-seat sedan. Starting at $176,400, the 2017 Mercedes-Benz AMG S 63 AMG S 63 AWD 4MATIC Cabriolet is powered by a 5.5L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 14-mpg in the city and 22-mpg on the highway. The top of the line 2017Mercedes-BenzAMG S 63AMG S 63 AWD 4MATIC Coupe , priced at $ 164,750 , is powered by a 5.5L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 23-mpg on the highway.