The 2017 Mercedes-Benz AMG C 43 is available as a 4-door, 5-seat sedan. Starting at $55,500, the 2017 Mercedes-Benz AMG C 43 AMG C 43 AWD 4MATIC Coupe is powered by a 3.0L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 28-mpg on the highway. The top of the line 2017Mercedes-BenzAMG C 43AMG C 43 AWD 4MATIC Cabriolet , priced at $ 60,400 , is powered by a 3.0L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 26-mpg on the highway.