Rotary engines come in all sorts of shapes and sizes. They can be as large as this six-rotor unit powering a Mazda RX-4 drag car in New Zealand, or as small as this 2.4-cc single-rotor engine above.

Internal-combustion engines are making impressive strides in rotational speed. The Lamborghini Temerario has a 4.0-liter twin ...

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

Toyan, a company that makes working miniature engines, has made what is claimed to be the world’s smallest rotary engine. Despite its tiny stature, the 0.0024-liter engine can still howl. Purchased by ...

A company called Changan has developed a new rotary engine, according to reports from CarNewsChina. It’s called the R05E, and it’s the very first high-powered rotary engine developed in the region.

Chinese firm Dongan Auto revives the Wankel engine, developing a lightweight prototype aimed at next-gen aerial mobility platforms ...

Rob Dahm, notorious rotary-powered car builder, has firmly jumped into the deep end of the pool with his latest project: The world's only 15.7-liter, tri-turbo Y12 rotary engine. If that doesn't make ...