With Mazda and its rotary engines, their configuration and layout aren't specified in cylinders, as they don't have any. Due to its distinctive Wankel rotary design, they instead use rotors rather than pistons, which were designed to cycle through their combustion process more efficiently. Typically, most of Mazda's more contemporary sports and performance cars, like the RX7 and RX8, use 2 rotor engines. Some of their higher-end and rarer offerings, such as the Eunos Cosmo, had a mighty 3 rotor. Meanwhile, the elusive 4 rotor engines are only reserved for Mazda's most performant vehicles. For example, their world-beating 787B race car was powered by a 28B 4 rotor engine. This was essentially Mazda's iconic 13B 2 rotor but coupled together into a single engine.