Two Coupes with some similarities, but otherwise different in most aspects such as the modifications, starting price, horsepower, ground shadow size, height, and fuel economy. First of all, there is a notable difference in the starting price of the 2016 Porsche 911 Coupe GT3, which is $173,950 less than the base MSRP of the 2016 Rolls-Royce Wraith. Also, the 2016 Wraith has bigger and thirstier engine; the 2016 911 Coupe GT3 gets 2 more mpg. In addition, the 911 Coupe GT3 is both significantly smaller and shorter than the Wraith. Among similarities are the body structure, market segment, and maximum occupancy.