Mazda Familia Second Generation Rotary Coupe
Introduced in July 1968, the Familia Rotary Coupe brought Mazda’s rotary engine to its compact Familia range. Exported as the R100, it helped establish Mazda’s international rotary identity.
Identity and place in the Familia range
The Familia Rotary Coupe was a rotary-powered coupe variant of the second-generation Mazda Familia. Mazda introduced it in July 1968, following the November 1967 introduction of the parent generation. These are calendar introduction dates, not universal export model-year designations. Mazda’s chronology identifies the coupe as the R-100 Coupe, while its Japanese history gives Mazda R100 as the export name. These names belong to this variant rather than separate generations. Mazda chronology; Familia history.
Design and rotary engineering
The coupe paired the Familia’s compact-car setting with the 10A two-rotor engine. Mazda specifies 491 cc per rotor and an introductory output of 100 PS at 7,000 rpm, measured gross. This is a power figure; the English chronology’s use of the word “torque” alongside PS is a wording error. The figure should not be treated as a net-power rating for every export version. Mazda chronology.
Mazda’s retrospective identifies round rear lamps as a distinguishing feature and places the car within the rounded design direction adopted by the redesigned Familia. It quotes a maximum speed of 180 km/h and a standing 400-metre time of 16.4 seconds. These are manufacturer historical claims, not independently measured results or specifications guaranteed across markets. Great Cars of Mazda: Familia, Part 2.
Names, body styles and export development
The July 1968 coupe should be distinguished from the Familia Rotary SS four-door sedan, which Mazda dates to July 1969. In April 1970, Mazda brought its rotary Familia offerings into the Familia Presto Rotary series. That naming change belongs within the development of the existing range. Mazda’s Japanese Familia history.
The same history connects the R100’s entry into North America with a thermal-reactor exhaust-treatment system used to address hydrocarbon emissions and meet 1970 United States federal requirements. This market-specific emissions development should not be assumed to describe the original Japanese launch specification. Mazda’s Japanese Familia history.
Historical significance
Following the Cosmo Sport, the Rotary Coupe extended Mazda’s rotary programme into the Familia compact-car family. Its international competition activity also gave the engine a wider public identity: Mazda records a victory at the 1969 Singapore Grand Prix and appearances at circuits in Belgium, Germany, Britain and South Africa. Its significance lies in this combination of compact-car application, export exposure and motorsport visibility. Great Cars of Mazda: Familia, Part 2.
Production and specification scope
The cited histories establish the introduction date and subsequent naming milestones, but do not establish a coupe-specific final assembly date, production total or assembly location. Those details remain unasserted here. Export model years, equipment and emissions specifications require market-specific documentation; the later four-door Rotary SS is outside this coupe record.
Mazda Familia Second Generation (1967)
Parent generation in the Manufacturer > Model > Generation > Variant hierarchy.
Sources and image credit
- Mazda corporate chronology, 1920–1979: generation and rotary-coupe introductions.
- Mazda Familia history, Chapter 3: coupe, Rotary SS, Presto naming and R100 exports.
- Great Cars of Mazda, Familia Part 2: design, engine, manufacturer performance claims and competition history.
- Shoggothe: Australian-delivered 1969 Mazda R100 photograph; CC BY-SA 3.0.
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Mazda Familia Second Generation Rotary Coupe 10A Rotary Engine
The 10A brought Mazda’s two-rotor engine to the second-generation Familia Rotary Coupe in July 1968. Mazda specifies 491 cc per rotor and 100 PS at 7,000 rpm, gross.
Engine
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