Two Convertibles with more similarities, such as the body structure, market segment, fuel economy, ground shadow size, height, and maximum occupancy, than differences, like the starting price and horsepower. First of all, there is a notable difference in the starting price of the 2017 BMW M6 Convertible, which is $98,400 less than the base MSRP of the 2017 Bentley Continental Convertible. And finally, the 2017 M6 Convertible has a more powerful engine than the 2017 Continental Convertible. Among similarities are the body structure, market segment, fuel economy, ground shadow size, height, and maximum occupancy.