Two Coupes with some similarities, but otherwise different in most aspects such as the model year, horsepower, fuel economy, and maximum occupancy. First of all, although the 2016 E-Class Coupe has a more powerful engine than the 2013 S5 Coupe, it gets 1.5 more mpg. Also, the E-Class Coupe seats two more passengers than the S5 Coupe. Among similarities are the body structure, market segment, starting price, ground shadow size, and height.