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

The rotary engine, previously a staple in Mazda's lineup, is an engine design that foregoes the round piston and singular chamber of a regular reciprocal internal combustion engine. Instead, the ...

Rotary engines made their biggest impact in Mazda sports cars, but a recent episode of "Jay Leno's Garage" delves into the rotary's earlier history. Before it was popularized by Mazda, the rotary ...

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