Two Sedans with more similarities, such as the body structure, market segment, fuel economy, ground shadow size, and height, than differences, like the model year, starting price, horsepower, and maximum occupancy. First of all, there is a notable difference in the starting price of the 2016 Mercedes-Benz CLS-Class, which is $9,600 less than the base MSRP of the 2013 BMW 6 Series Gran Coupe, which is three model years older. Also, the 2016 CLS-Class produces fewer horsepower than the 2013 6 Series Gran Coupe. And finally, you'll seat one more passenger in the 6 Series Gran Coupe than in the CLS-Class. Among similarities are the body structure, market segment, fuel economy, ground shadow size, and height.