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1970 MAZDA COSMO

ROTARY ENGINE REAR WHEEL DRIVE

Production Years: 1967-1972
Country: Japan
Number Produced: 1,176 (833 Series II)

Engineered by Felix Wankel

The first Mazda to bear the Cosmo name (called the 1105 on models intended for export) was (along with the NSU Ro80) one of the first production cars to feature a 2-rotor Wankel engine. Full production began in May 1967 and lasted through 1972,though Cosmos were built by hand at a rate of only about one per day. This amazing JDM sports car is an early and excellent example of Japanese innovation and execution of the Felix Wankel rotary shortly after NSU development. ​ Series II/L10B was introduced in July 1968. It had a more powerful 128 hp (95 kW)/103 lb-ft (140 N-m) 0813 engine, power brakes, 15-inch wheels and a 5-speed manual transmission. The wheelbase had been expanded by 15 inches (38.1 cm) for more room and a better ride. 343 Series I cars and 833 Series II cars were manufactured. Fewer than six Series II models were initially imported into the United States.

1970 Mazda Cosmo Video

Felix-Wankel-engine-rotary-internal-combustion.webp

The Wankel engine is a type of internal combustion engine that uses a rotary design. It was invented by a German engineer named Felix Wankel in the 1950s. Instead of pistons moving up and down like in a traditional engine, the Wankel engine has a triangular rotor that moves in a circular motion inside a specially shaped housing. This design allows for a smoother operation and a higher power-to-weight ratio than traditional engines. The Wankel engine was used in some sports cars and motorcycles in the 1960s and 1970s, but its use has declined in recent years due to concerns about fuel efficiency and emissions.