Two Sedans with more similarities, such as the body structure, market segment, starting price, ground shadow size, height, and maximum occupancy, than differences, like the modifications, horsepower, and fuel economy. First of all, the 2017 Bentley Flying Spur W12 S has bigger and thirstier engine; the 2017 Mercedes-Benz S-Class Sedan AMG S 65 gets 1 more mpg. Among similarities are the body structure, market segment, starting price, ground shadow size, height, and maximum occupancy.