When considering rotary engines, the Wankel engine often comes to mind due to its high power-to-weight ratio, though it ...

A fresh US patent filing takes on the exact emissions weakness that has kept Mazda's rotary revival stuck on concept-car ...

Mazda and the rotary engine have a relationship that refuses to end. Years after the RX-8 disappeared from showrooms, the ...

A new Mazda patent describes an EGR system built for the rotary engine, tackling the emissions weakness that ended the RX-8's ...

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 ...

Mazda refuses to let the rotary engine die, for better or worse. A recently published patent from the Japanese automaker ...

Mazda 13B rotary engine in a white Mazda RX-7 engine bay. - TTTNIS/Wikimedia Commons When it comes to unconventional engine design, few exceed the Wankel rotary in terms of weirdness. Despite that, ...

Chris Bruce has worked in the automotive industry since 2011 and has written thousands of stories about cars, motorsports, and motorcycles in that time. He has written for Autoblog, Autoviva, CarFax, ...

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 ...

For more than a decade the name Wankel has popped up whenever car enthusiasts start talking about advanced-design automotive powerplants. The theory of the Wankel engine goes back to 1954 when Dr.