Two Sedans with some similarities, but otherwise different in most aspects such as the modifications, starting price, model year, horsepower, fuel economy, and ground shadow size. First of all, the 2016 Mercedes-Benz S-Class Sedan S 65 AMG is priced $74,250 lower compared to the base MSRP of the 2014 Bentley Mulsanne, which is older by two model years. Also, a bigger engine usually means less mpg. But the 2016 S-Class Sedan S 65 AMG has a more powerful engine and it gets 2 more mpg than the 2014 Mulsanne. In addition, the Mulsanne has a slightly larger body than the S-Class Sedan S 65 AMG. Among similarities are the body structure, market segment, height, and maximum occupancy.