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 xDrive, which is $94,690 less than the base MSRP of the 2017 Maserati GranTurismo Convertible. Also, the 2017 GranTurismo Convertible has a more powerful engine and gets 10 mpg less than the 2017 2 Series Convertible M240i xDrive. In addition, comparing the dimensions we see that the 2 Series Convertible M240i xDrive is significantly smaller, although it's slightly taller than the GranTurismo Convertible. Among similarities are the body structure, market segment, and maximum occupancy.