Mazda Technology: Development was based on the prototype Mazda RX-85, announced in 1967 at the 14th Tokyo Motor Show. It went on sale in July, 1968. The type 10A rotary engine, proven to be reliable and durable in the Cosmo Sport, was mounted in a fastback, two-door coupe style body designed as a high performance touring car, but with sufficient space to be used as a family car. In 1969, the sedan version-a high-performance family car called the Familia Rotary SS-was added to the lineup. A total of 95,891 units were produced over 5 years.