Think you know everything about rotary engines? Well have you ever heard of the bi-rotary engine that mixes pistons and ...

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

Mazda is most noted for its rotary engine, developed by Felix Wankel in Germany before World War II. But of all its rotary-powered cars, one stands out.

The rotary engine has been a Mazda staple since 1967. It powered one of the most famous and eccentric Japanese sports car line-ups, the RX-series, until 2012 when Mazda discontinued pure ...

Many Mazda employees want a new rotary sports car, and this could be the “push” the company needs, but at what cost?

Mazda’s rotary engine is coming back in the spotlight, but this time it’s not just a nostalgic callback to the RX-7 glory days. Instead, it’s quietly shaping the brand’s electrified future. Rather ...

In a world dominated by pistons, the rotary engine was something different for motorists. It was the vision of German engineer Felix Wankel, built on the belief that the up-and-down motion of pistons ...

Over-the-top rotary builds are an enthusiast tradition. Because so few rotary cars have been made, the limits of the engine type haven't been fully exploited by automakers. It's been tuners who have ...

Perfectly tuning the heat range of an engine's spark plugs is something of a dark art to all but the most well versed tuners and the engineering egg heads at automotive OEMs. Getting the spark plug ...

The electric motor might carry the hype banner at the moment, but some minds remain convinced that there's plenty of innovation left to be extracted from internal combustion. AIE is one of the rotary ...