The 2013 Mercedes-Benz SLS AMG is available as a 2-door, 2-seat coupe. Starting at $199,500, the 2013 Mercedes-Benz SLS AMG Coupe is powered by a 6.2L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 13-mpg in the city and 19-mpg on the highway. The top of the line 2013Mercedes-BenzSLS AMGRoadster , priced at $ 206,000 , is powered by a 6.2L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 13-mpg in the city and 19-mpg on the highway.