In 1972, Mazda released a 2nd generation LA2 series Luce, or 929 as it was known in some countries, the rotary powered model was the Mazda RX-4.
The RX4 was built from 1973-77, it was a larger car than the RX2 and RX3, The RX4 was made available to Australians in four-door sedan and two-door coupe versions. A choice of a 4-speed manual gearbox and a 3-speed automatic gearbox was available for the sedan, whereas the Coupe was only available with a 4-speed manual transmission. The sedan was equipped with a flatter nose and dashboard than those on the coupe, which was equipped with a pointed nose, cockpit-style dashboard, and a more personalised interior.
In 1974, the 70kw 12A Rotary engine was replaced by the more powerful 85kw 13B