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, the 2016 BMW i8 is priced $98,700 lower compared to the base MSRP of the 2016 Bentley Continental GT Coupe Speed. Also, the 2016 Continental GT Coupe Speed has a more powerful engine than the 2016 i8, and it gets 13 fewer miles on a gallon of fuel. In addition, the Continental GT Coupe Speed has a slightly taller body than the i8. Among similarities are the body structure, market segment, ground shadow size, and maximum occupancy.