The 2017 Mercedes-Benz AMG SL 65 is available as a 2-door, 2-seat convertible. Starting at $219,850, the 2017 Mercedes-Benz AMG SL 65 AMG SL 65 is powered by a 6.0L, 12-cylinder engine mated to an automatic transmission that returns an EPA estimated 13-mpg in the city and 22-mpg on the highway.