Two Convertibles 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 Convertible, which is $153,900 less than the base MSRP of the 2015 Bentley Continental GT Convertible Speed. Also, the 2015 Continental GT Convertible Speed has a more powerful engine and gets 6 mpg less than the 2016 911 Convertible. In addition, the Continental GT Convertible Speed is both slightly larger and taller than the 911 Convertible. Among similarities are the body structure, market segment, and maximum occupancy.