Two Sedans with some similarities, but otherwise different in most aspects such as the model year, powertrain, starting price, fuel economy, market segment, and horsepower. First of all, there is a notable difference in the starting price of the 2013 Audi A8, which is $23,450 less than the base MSRP of the 2016 Mercedes-Benz S-Class Sedan Hybrid, which is three model years newer. Also, although the 2016 S-Class Sedan Hybrid has a more powerful engine than the 2013 A8, it gets 7.4 more mpg. Among similarities are the body structure, market segment, ground shadow size, height, and maximum occupancy.