Two Convertibles with some similarities, but otherwise different in most aspects such as the modifications, starting price, horsepower, fuel economy, ground shadow size, and height. First of all, there is a notable difference in the starting price of the 2017 BMW 2 Series Convertible M240i, which is $96,690 less than the base MSRP of the 2017 Maserati GranTurismo Convertible. Also, the 2017 GranTurismo Convertible has bigger and thirstier engine; the 2017 2 Series Convertible M240i gets 10 more mpg. In addition, the 2 Series Convertible M240i is significantly smaller, but the roofline is slightly taller than that of the GranTurismo Convertible. Among similarities are the body structure, market segment, and maximum occupancy.