Two Sedans with some similarities, but otherwise different in most aspects such as the model year, starting price, horsepower, and fuel economy. First of all, the 2016 BMW 7 Series is priced $11,600 lower compared to the base MSRP of the 2014 Mercedes-Benz S-Class, which is older by two model years. And finally, the 2014 S-Class has bigger and thirstier engine; the 2016 7 Series gets 1.5 more mpg. Among similarities are the body structure, market segment, ground shadow size, height, and maximum occupancy.