Two Convertibles with some similarities, but otherwise different in most aspects such as the starting price, horsepower, fuel economy, and ground shadow size. First of all, there is a $66,540 difference in the base MSRP. The 2016 Maserati GranTurismo Convertible has a higher starting price than the 2015 Audi RS 5 Convertible. Also, a bigger engine usually means less mpg. But the 2015 RS 5 Convertible has a more powerful engine and it gets 3 more mpg than the 2016 GranTurismo Convertible. And finally, the body structure of RS 5 Convertible is slightly smaller than that of the GranTurismo Convertible. Among similarities are the body structure, market segment, height, and maximum occupancy.