Two Convertibles with some similarities, but otherwise different in most aspects such as the starting price, fuel economy, horsepower, ground shadow size, and height. First of all, the 2018 Porsche 911 Convertible is priced $132,700 lower compared to the base MSRP of the 2018 Bentley Continental. Also, the 2018 Continental has a more powerful engine than the 2018 911 Convertible, and it gets 7.5 fewer miles on a gallon of fuel. And finally, the Continental is both slightly larger and taller than the 911 Convertible. Among similarities are the body structure, market segment, and maximum occupancy.