Two Convertibles with some similarities, but otherwise different in most aspects such as the starting price, horsepower, fuel economy, and height. First of all, there is a notable difference in the starting price of the 2016 Audi A3 Convertible, which is $109,140 less than the base MSRP of the 2016 Maserati GranTurismo Convertible. Also, the 2016 GranTurismo Convertible has a more powerful engine than the 2016 A3 Convertible, and it gets 12 fewer miles on a gallon of fuel. And finally, the A3 Convertible is slightly taller than the GranTurismo Convertible. Among similarities are the body structure, market segment, and maximum occupancy.