The Mazda RX-4 (called the Luce Rotary in Japan) was an automobile sold in the 1970s. It was a larger car than its rotary-powered contemporaries, the Capella-based RX-2 and Familia-based RX-3. It shared the Luce/929 chassis, replacing the R130 in October of 1972, and was produced through October 1977. Its predecessor (the R130) and replacement (the rotary Luce Legato) were not sold in the United States. Mazda marketed the RX-4 as being sporty and luxurious with the RX-4 having the best of both worlds. This gave Mazda a well needed boost in the popularity of the Wankel engine unique to Mazda.
The RX-4 was initially available as a hardtop coupe and sedan, with a station wagon launched in 1973 to replace the Savanna Wagon. Under the hood at first was a 130 hp 12A engine, but this was replaced by the larger 13B in 1974 producing 125Hp, for export. This engine was Mazda's new "AP" (for "anti-pollution") version, with much-improved emissions and fuel economy, but somewhat worse cold-starting behavior.
In South Africa it was produced until 1979, all years only with the 12A engine.
The car used an strut-type independent suspension in front with a solid axle in the rear. Brakes were discs in front and drums in the rear. Curb weight was low at 2620 lb and the wheelbase fairly short at 99 in (2510mm).
The body was freshened in 1976.