Rotary engines are extremely interesting, but they're also known for a few persistent issues, including apex seal failure.

Wankel engines first saw use in production cars as early as 1964 — and not even in a Mazda, but rather in an NSU. That little single-rotor powerplant quickly evolved into the more typical two-rotor ...

The rotary engine has been a Mazda staple since 1967. It powered one of the most famous and eccentric Japanese sports car line-ups, the RX-series, until 2012 when Mazda discontinued pure ...

In an inline engine or ‘straight engine’, all cylinders are arranged in a single, straight line. This layout is simple, space saving and cost-effective. It makes for a popular choice for small to ...