2016 Mercedes-Benz E-Class Convertible is the newer version with just one noteworthy difference, the maximum occupancy.. And finally, there is a difference in the number of passengers; the 2016 Mercedes-Benz E-Class Convertible seats two more the 2015 Mercedes-Benz E-Class Convertible. Among similarities are the body structure, market segment, starting price, horsepower, fuel economy, ground shadow size, and height.