- Engine code
- 10A
- Manufacturer
- Mazda
- Configuration
- 2-rotor Wankel
- Displacement
- 982 cc
- Aspiration
- Naturally aspirated
- Production
- 1965 – —
- Applications
- Mazda Cosmo Sport (L10A/L10B) / Mazda Familia Rotary Coupé / Mazda Savanna GT
- 01
The 10A was Mazda's first production Wankel engine; its name reflects roughly 1.0 litre from two 491 cc chambers.
Source: Mazda Wankel engine — Wikipedia (English) - 02
Its rotor housings were sand-cast aluminium plated with chrome, with side housings sprayed with molten carbon steel.
Source: Mazda Wankel engine — Wikipedia (English) - 03
The first version, the 0810, was rated at 110 hp gross at 7,000 rpm in the Series I Cosmo.
Source: Mazda Wankel engine — Wikipedia (English) - 04
Japanese Wikipedia describes it as the world's first multi-rotor rotary engine for a production car.
Source: マツダ・コスモスポーツ — ウィキペディア日本語版
Technology — The rotary
A triangular rotor turns inside an epitrochoid housing; each flank completes intake, compression, combustion and exhaust as it sweeps around — no pistons, no valves.
Technology page →02 — Applications in the archive
03 — Sources
- 01Mazda Wankel engine – WikipediaWikipedia · reference · accessed 2026-09-26
- 02マツダ・コスモスポーツ – Wikipedia (ja)Wikipedia · reference · accessed 2026-09-26