Two Convertibles with some similarities, but otherwise different in most aspects such as the starting price, fuel economy, horsepower, ground shadow size, and maximum occupancy. First of all, the 2017 Mercedes-Benz SL-Class is priced $58,790 lower compared to the base MSRP of the 2017 Maserati GranTurismo Convertible. Also, the 2017 GranTurismo Convertible has a more powerful engine than the 2017 SL-Class, and it gets 6.5 fewer miles on a gallon of fuel. In addition, the GranTurismo Convertible has a slightly larger body than the SL-Class. And finally, the Maserati GranTurismo Convertible seats two more passengers than the Mercedes-Benz SL-Class. Among similarities are the body structure, market segment, and height.