Wankel rotary engine powered thousands of aircraft. One of several problems: It spewed castor oil on its pilots.

When Mazda discontinued the RX-8, most people assumed the rotary engine was finished. The RX-8 was the last production car to use Mazda's signature Wankel rotary, and its departure seemed to signal ...

There are a lot of strange automotive designs out there, but this defunct engine from the '70s may just be the weirdest one ...

Launched in the late 1960s, the Ro 80 wasn't just the world's first mass-produced sedan with rotary power, but also one of the most innovative production vehicles of its era. Follow us: The rotary ...

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

The R130 was a very rare model, produced for only three years and with fewer than 1,000 units built. It was also notable as the only front-wheel-drive Mazda model powered by a rotary engine until the ...

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 ...

Almost every internal combustion vehicle on the planet today uses the classic piston engine. These run by converting heat energy into reciprocating motion, and then rotary motion that ultimately ...