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

The Mazda 787B carved its name into motorsport history in 1991 as the first Japanese car to win the 24 Hours of Le Mans overall. Even more legendary was its powertrain, a screaming 2.6-liter ...

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 ...

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

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 ...