Two Coupes with some similarities, but otherwise different in most aspects such as the modifications, starting price, horsepower, fuel economy, market segment, and height. First of all, there is a notable difference in the starting price of the 2017 BMW i8, which is $96,900 less than the base MSRP of the 2017 Bentley Continental Coupe GT Speed. Also, the 2017 Continental Coupe GT Speed has a more powerful engine than the 2017 i8, and it gets 13 fewer miles on a gallon of fuel. In addition, the Continental Coupe GT Speed is slightly taller than the i8. Among similarities are the body structure, market segment, ground shadow size, and maximum occupancy.