Mazda Cosmo Sport (Series I)

Photo: Tokumeigakarinoaoshima / Wikimedia Commons, CC BY-SA 4.0

Mazda · 1967–1968

Mazda Cosmo Sport Series I

Also sold as Mazda 110S, Mazda Cosmo Sport 110S

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Mazda's first rotary car and the world's first production car with a twin-rotor engine, built by hand in a run of just 343. Light, fast-revving and unlike anything else from Japan in 1967, it proved the Wankel could be made to last.

Two-seat coupeRear-wheel drive4-speed manual

Made by Mazda (then Toyo Kogyo)

In the numbers
Power
108hp
110 PS @ 7,000 rpm
Weight
940kg
2,072 lb
0–60 mph
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Not on record
Top speed
115mph
Maker's claim
Built
343

Figures for the 1967 Mazda Cosmo Sport Series I (L10A), Japanese market. Sources are listed at the foot of the page.

The story

The Cosmo Sport existed to settle an argument. Mazda licensed the Wankel engine in 1961, then spent 6 years with a team of 47 engineers under Kenichi Yamamoto fighting the chatter marks that scarred rotor housings, until new apex seals finally beat them. The car built around the result looked ready for orbit, low and long with a tiny glasshouse, and its 982 cc twin-rotor made 110 PS (108 hp) while spinning eagerly toward 9,000 rpm. At about 940 kg (2,075 lb), it felt light and alert in a way few Japanese cars of the day could match.

Mazda never meant the Series I to sell in volume. It built about 30 a month, studied how owners used them, and fed the lessons into a longer, stronger Series II just over a year after launch. The short wheelbase and unassisted brakes ask for respect at speed, but on a winding road the smooth, wailing engine and light nose make it a delight. In 1968 a pair of Cosmos ran an 84-hour race at the Nürburgring, and one finished fourth overall. Every RX-7, the RX-8 and the Le Mans-winning 787B descend from these 343 cars.

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From Carveyance

Also appears in: You Spin Me Round

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Where the numbers come from

Figures are for the 1967 Mazda Cosmo Sport Series I (L10A), Japanese market. Numbers come from the Carveyance stories about this car, which were checked when they were written, and where a story didn't give one, from the sources below. A dash means we haven't found a figure we trust.

Photo: Tokumeigakarinoaoshima / Wikimedia Commons, CC BY-SA 4.0

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