16. Mazda RX7
If you know a thing or two about Japanese sports cars, you know the RX-7 has a special place in the nomenclature of performance cars from the “Land of the Rising Sun.” The reason is the engine. In contrast to other cars with conventional piston engines, the RX-7 has always had a rotary Wankel engine since the beginning.
However, that Wankel engine is not exactly the most dependable unit in the world. So, what is a logical solution to engine quality problems? You got it, a V8 swap.