Rotary Engine

History of Rotary

Engineering History
The Advanced Rotary Engine
The World’s Only Rotary Engine Plant

How was Mazda able to pioneer the commercial use of dual-rotor REs in 1967 ahead of all the other carmakers? How can the company keep producing and improving the engine after 40 years? The answer lies not only in continuing research and development but also in the company's superior expertise in production and machining techniques.

In an effort to begin mass-production of the rotary engine, Mazda built an exclusive manufacturing plant equipped with state-of-the-art manufacturing technology and equipment. This is the only production plant for rotary engines in the world, made possible by a combination of superb craftsmanship distilled through decades of rotary engine production and Mazda’s advanced manufacturing technologies.

Production Line
Production Line
Advanced Rotary Engines

Mazda showcased a hydrogen-fuelled rotary engine concept at the Tokyo Motor Show in 1991.

Hydrogen fuel produces no carbon dioxide, the gas linked to global warming, and Mazda has been investigating the hydrogen application of rotary engines since the 1980s, even carrying out testing on public roads. More recently, Mazda proved it can produce the performance required for commercial use when it began leasing some Hydrogen RE vehicles to government offices in early 2006.


Related information

Hydrogen Rotary Engine

Hydrogen Rotary Engine
The rotary engine has advantages in using hydrogen fuel since temperatures around the intake port are relatively low and it can induct air and hydrogen separately.


Unveiled at the 1993 Tokyo Motor show, the HR-X2 concept car featured a Hydrogen rotary engine. This car adopted metal-hydride to carry hydrogen fuel safely.

How a Rotary Engine Works

Watch an easy-to-understand animated explanation of how a rotary engine works.