Two Sedans with some similarities, but otherwise different in most aspects such as the modifications, starting price, horsepower, fuel economy, and ground shadow size. First of all, the 2017 BMW 7 Series M760i xDrive is priced $150,870 lower compared to the base MSRP of the 2017 Bentley Mulsanne. Also, the 2017 7 Series M760i xDrive has a more powerful engine than the 2017 Mulsanne, but it gets 2.5 more miles on a gallon of fuel. In addition, the Mulsanne has a slightly larger body than the 7 Series M760i xDrive. Among similarities are the body structure, market segment, height, and maximum occupancy.