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, the 2016 Porsche 911 Coupe GT3 RS is priced $63,500 lower compared to the base MSRP of the 2016 Bentley Continental GT Coupe Speed. Also, the 2016 Continental GT Coupe Speed has bigger and thirstier engine; the 2016 911 Coupe GT3 RS gets 2 more mpg. In addition, not only Continental GT Coupe Speed is slightly larger, but it's also taller than the 911 Coupe GT3 RS. Among similarities are the body structure, market segment, and maximum occupancy.