Two Coupes with some similarities, but otherwise different in most aspects such as the starting price, horsepower, fuel economy, height, and maximum occupancy. First of all, there is a notable difference in the starting price of the 2015 Mercedes-Benz C-Class Coupe, which is $13,200 less than the base MSRP of the 2016 Porsche Cayman. Also, the 2016 Cayman has a more powerful engine than the 2015 C-Class Coupe, and it gets 1.3 fewer miles on a gallon of fuel. In addition, the C-Class Coupe has a slightly taller body than the Cayman. And finally, the Mercedes-Benz C-Class Coupe seats two more passengers than the Porsche Cayman. Among similarities are the body structure, market segment, and ground shadow size.