2015 BMW M4 Convertible vs. 2016 Porsche Boxster

Two Convertibles with some similarities, but otherwise different in most aspects such as the starting price, horsepower, fuel economy, ground shadow size, height, and maximum occupancy. First of all, there is a notable difference in the starting price of the 2016 Porsche Boxster, which is $20,400 less than the base MSRP of the 2015 BMW M4 Convertible. Also, the 2015 M4 Convertible has bigger and thirstier engine; the 2016 Boxster gets 2 more mpg. In addition, not only M4 Convertible is slightly larger, but it's also taller than the Boxster. And finally, you'll seat two more passengers in the BMW M4 Convertible than in the Porsche Boxster. Among similarities are the body structure and market segment.