Two Convertibles with some similarities, but otherwise different in most aspects such as the model year, starting price, horsepower, ground shadow size, and height. First of all, there is a $13,800 difference in the base MSRP. The 2016 Porsche 911 Convertible, a newer vehicle by three model years, has a higher starting price than the 2013 BMW 6 Series Convertible. Also, the 2016 911 Convertible pulls more horsepower than the 2013 6 Series Convertible. And finally, the 6 Series Convertible is both slightly larger and taller than the 911 Convertible. Among similarities are the body structure, market segment, fuel economy, and maximum occupancy.