Two Sedans with more similarities, such as the body structure, powertrain, market segment, ground shadow size, height, and maximum occupancy, than differences, like the horsepower, starting price, and fuel economy. First of all, there is a $5,550 difference in the base MSRP. The 2016 BMW 5 Series Diesel has a higher starting price than the 2015 Mercedes-Benz E-Class Sedan Diesel. And finally, the 2016 5 Series Diesel has bigger and thirstier engine; the 2015 E-Class Sedan Diesel gets 2 more mpg. Among similarities are the body structure, powertrain, market segment, ground shadow size, height, and maximum occupancy.