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

Rob Dahm, notorious rotary-powered car builder, has firmly jumped into the deep end of the pool with his latest project: The world's only 15.7-liter, tri-turbo Y12 rotary engine. If that doesn't make ...

Astron aerospace has shown a partial prototype of a new rotary combustion engine it claims runs at an extraordinary 60% thermal efficiency, burning totally clean with zero NOx emissions and nothing ...

Mazda, as an automaker, perfectly defines persistence. How else would you explain the Japanese automaker sticking to the notorious yet insanely cool rotary engines in its cars when the rest of the ...

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 ...

Mazda has long had a knack for crafting beautiful concept cars, and at the Japan Mobility Show, it reminded everyone of that talent by revealing two of them. The standout is the Vision-X Coupe, a ...

After years of rumors and experimentation behind closed doors, the Mazda rotary engine is officially back. The Vision X-Coupe, a plug-in hybrid concept showcased at the 2025 Japan Mobility Show, has ...

Rotary engines (also known as Wankel engines and Wankel rotary engines) are quite different from piston or "reciprocating" engines. One of the distinguishing features is that they don't need valves to ...

How the 13B-MSP Renesis evolved from earlier Mazda rotary designs, technical features explained, and common problems and maintenance issues discussed. The 13B-MSP Renesis rotary engine powered the ...

Nigel first entered the world of automotive journalism in the mid-80s, working for what was then the “bible” of weekly automotive content - Motoring News. Those were the days of tip-tap typewriters, ...

The Renault R5 Turbo, a mid-engine rally homologation special based on a front-wheel drive hatchback, is not a subtle car to begin with. It might be even less subtle with an unusual engine in its ...