Two Coupes 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 2015 BMW 2 Series Coupe M235i xDrive, which is $85,500 less than the base MSRP of the 2016 Porsche 911 Coupe GT3. Also, the 2016 911 Coupe GT3 has a more powerful engine than the 2015 2 Series Coupe M235i xDrive, and it gets 7 fewer miles on a gallon of fuel. In addition, although the 2 Series Coupe M235i xDrive is slightly smaller, it has a taller body than the 911 Coupe GT3. Among similarities are the body structure, market segment, and maximum occupancy.