The rotary's reliability problem was mostly an owner problem. Here's the disciplined playbook that keeps FC 13Bs alive.

When considering rotary engines, the Wankel engine often comes to mind due to its high power-to-weight ratio, though it suffers from drawbacks in fuel economy, emissions, and durability. In contrast, ...

When it comes to unique engine designs, one of the most prolific is the trusty rotary configuration. Instead of featuring a number of spherical cylinders moving up and down like in most internal ...

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 ...

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 ...

The rotary engine is easily one of the most controversial powertrains in the world of cars, and it's known for the brap-brap ...

If you’ve ever wondered what a single-rotor rotary engine sounds like, here’s one that makes 155 horsepower by Rob Dahm. Rob Dahm is one of those guys who make crazy builds. Just a while back, he ...

Language is an imperfect medium, but it's what we've got, so let's go with it. Determining the swept volume of inventor Felix Wankel's rotary engine can generate more arguments than claiming what a GT ...

When it comes to unconventional engine design, few exceed the Wankel rotary in terms of weirdness. Despite that, the same basic principles of internal combustion apply here: Fuel and air are mixed and ...

LiquidPiston is testing a 10-kW generator it's prototyped for the US military, which it claims is just a quarter of the size and weight of the current model the Army uses. That means it'll be far ...

For better or worse, Mazda and the rotary engine are connected like vintage champagne and Gouda cheese. The rotary has since made a comeback in the Euro-only Mazda MX-30 Skyactiv R-EV, but it has ...