in 2012, the engine was produced only for single seater racing, with the one-make Star Mazda Championship being contested with a Wankel engine until 2017; the series' transition to using a Mazda-branded piston engine in 2018 temporarily ended the production of the engine. In 2023, Mazda reintroduced the engine as a generator for the 2023 MX-30 e-Skyactiv R-EV plug-in hybrid.

Displacement