Two Sedans with more similarities, such as the body structure, market segment, height, and maximum occupancy, than differences, like the modifications, starting price, horsepower, fuel economy, and ground shadow size. First of all, there is an $181,800 difference in the base MSRP. The 2017 Bentley Mulsanne Speed has a higher starting price than the 2017 BMW 7 Series M760i xDrive. Also, although the 2017 7 Series M760i xDrive has a more powerful engine than the 2017 Mulsanne Speed, it gets 2.5 more mpg. In addition, the body structure of Mulsanne Speed is slightly larger than that of the 7 Series M760i xDrive. Among similarities are the body structure, market segment, height, and maximum occupancy.