Two Sedans with some similarities, but otherwise different in most aspects such as the starting price, horsepower, ground shadow size, and height. First of all, the 2016 BMW M6 Gran Coupe is priced $83,800 lower compared to the base MSRP of the 2016 Bentley Flying Spur. Also, the 2016 Flying Spur pulls more horsepower than the 2016 M6 Gran Coupe. And finally, not only Flying Spur is slightly larger, but it's also taller than the M6 Gran Coupe. Among similarities are the body structure, market segment, fuel economy, and maximum occupancy.