The rotary engine was an unconventional design that delivered great power for its size. Here's what's good and bad about it.

The internal combustion engine, for all its mechanical sophistication, still runs on a 19th-century mechanical idea: pistons rising and falling, a crankshaft spinning, a steam-age architecture ...

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 ...

You hear endless myths about the Mazda RX-7, from breathless praise of its “magic” to horror stories about blown apex seals.

The Iconic SP is almost certain to house the new rotary powertrain announced by CEO Moro. It’s official. The rotary is coming back. Earlier this month at the Tokyo Auto Salon, Japan’s biggest car ...

Forbes contributors publish independent expert analyses and insights. Peter Lyon is based in Tokyo and writes about the car industry. At the Japan Mobility Show two years ago, Mazda unveiled a ...

Not only are Chinese carmakers redefining the world of EVs, but one of them is now taking on the Wankel rotary engine. Originally designed by German engineer Felix Wankel and later refined into a ...

A Wankel engine is a type of rotary engine, but not all rotary engines are Wankel engines. Wrapping your mind around this idea will help you to better understand the similarities as well as the ...