Two Convertibles with some similarities, but otherwise different in most aspects such as the ground shadow size, height, starting price, horsepower, and maximum occupancy. First of all, there is a $6,470 difference in the base MSRP. The 2018 Mazda MX-5 Miata RF has a higher starting price than the 2018 Volkswagen Beetle Convertible. Also, the 2018 MX-5 Miata RF produces fewer horsepower than the 2018 Beetle Convertible. In addition, the MX-5 Miata RF is both significantly smaller and shorter than the Beetle Convertible. And finally, you'll seat two more passengers in the Volkswagen Beetle Convertible than in the Mazda MX-5 Miata RF. Among similarities is the body structure.