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 2016 Porsche 911 Coupe GT3 RS, which is $34,800 less than the base MSRP of the 2016 Bentley Continental GT Coupe V8 S. Also, a bigger engine usually means less mpg. But the 2016 Continental GT Coupe V8 S has a more powerful engine and it gets 1 more mpg than the 2016 911 Coupe GT3 RS. In addition, the Continental GT Coupe V8 S body is slightly larger than the 911 Coupe GT3 RS, and in addition to that, it's also taller. Among similarities are the body structure, market segment, and maximum occupancy.