We look at why Mazda introduced the three-rotor 20B Wankel rotary engine, and why it only ever saw service in the Cosmo coupe ...

Most of the internal combustion piston engines built for vehicles throughout history have pretty familiar core designs. The ...

Wankel engines first saw use in production cars as early as 1964 — and not even in a Mazda, but rather in an NSU. That little single-rotor powerplant quickly evolved into the more typical two-rotor ...

In theory, Wankel-style rotary internal combustion engines have many advantages: they ditch the cumbersome crankcase and piston design, replacing it with a simple, single-chamber design and a thick, ...

It’s common in this line of work to stumble upon a story while researching for another story. Digging through archives and ...

The Goda Bankin AZ-1 uses the venerable 13B rotary engine, which is famous for powering many Mazda RX-7s across several ...

After years of rumors and experimentation behind closed doors, the Mazda rotary engine is officially back. The Vision X-Coupe, a plug-in hybrid concept showcased at the 2025 Japan Mobility Show, has ...

Wankel rotary engines, typically but not exclusively found in Mazdas, certainly lean on the "quirkier" side of modern powertrain systems, made quirkier because most rotary-powered cars on the road ...

The Renault R5 Turbo, a mid-engine rally homologation special based on a front-wheel drive hatchback, is not a subtle car to begin with. It might be even less subtle with an unusual engine in its ...