Two Sedans with some similarities, but otherwise different in most aspects such as the model year, modifications, starting price, horsepower, and fuel economy. First of all, there is a $31,950 difference in the base MSRP. The 2016 Mercedes-Benz CLS-Class AMG CLS 63 S 4MATIC, a newer vehicle by three model years, has a higher starting price than the 2013 Porsche Panamera. Also, the 2016 CLS-Class AMG CLS 63 S 4MATIC has a more powerful engine than the 2013 Panamera, and it gets 1.3 fewer miles on a gallon of fuel. Among similarities are the body structure, market segment, ground shadow size, height, and maximum occupancy.