Once bound by kei car rules, this Mazda Autozam AZ-1 now breaks them all with a widebody and serious firepower ...

The mind-bending world of birotary engines - a hybrid of piston and rotary technology that could revolutionize aviation. But ...

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 ...

For years, we've heard rumors that Mazda was going to bring back the rotary engine and give us a new sports car as a successor to the RX-7 and RX-8. And yet, arguably unsurprisingly, it hasn't ...

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 ...

How the 13B-MSP Renesis evolved from earlier Mazda rotary designs, technical features explained, and common problems and maintenance issues discussed. The 13B-MSP Renesis rotary engine powered the ...

Got a burning question or simply need some advice with problems you’ve encountered while wrenching on your current/future projects? Ask our automotive guru Eric Hsu anything—literally, he’s going to ...

Fewer than 38,000 of NSU’s revolutionary Ro80 models were built in the 10 years between its debut late in 1967 and the day in 1977 that NSU’s corporate parent, Volkswagen-Audi, turned the factory that ...

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 ...