Mazda has already put the rotary engine back into limited production, using a small single-rotor 830-cc version that produces a peak of 74 hp to act as a range-extender in the MX-30 R-EV ...

Traditional piston engines had dominated the landscape for decades, but whispers of a new, unconventional powerplant—the rotary engine—began to circulate among engineers and enthusiasts alike.

The iconic rotary car engine, thought to have been consigned to the dustbin of impractical technology, is making a comeback in Japan from the very automaker that introduced the system as far back ...