Mazda RX-3 Engines by Year

The compact RX-3 used the 12A rotary and became a racing favorite.

Pick a year to see every engine offered that model year, with its code, rated horsepower and the trims it came in. Each engine links to its full specs.

Jump to a year

RX-3 (Savanna S124A, US 12A) (1972–1978): 1972 · 1973 · 1974 · 1975 · 1976 · 1977 · 1978

RX-3 (Savanna S124A, US 12A) (1972–1978)

1972 RX-3 engines

Engine	Rated	Offered in
70 two-rotor rotary 12A	90 hp net	RX-3 coupe, RX-3 sedan, RX-3 Sports Wagon

1973 RX-3 engines

Engine	Rated	Offered in
70 two-rotor rotary 12A	90 hp net	RX-3 coupe, RX-3 sedan, RX-3 Sports Wagon

1974 RX-3 engines

Engine	Rated	Offered in
70 two-rotor rotary 12A	90 hp net	RX-3 coupe, RX-3 wagon

1975 RX-3 engines

Engine	Rated	Offered in
70 two-rotor rotary 12A	90 hp net	RX-3 coupe, RX-3 wagon, RX-3 4-door sedan (per R&T)

1976 RX-3 engines

Engine	Rated	Offered in
1.1L / 70 two-rotor rotary 12A	95 hp net	RX-3 coupe, RX-3 wagon

1977 RX-3 engines

Engine	Rated	Offered in
1.1L / 70 two-rotor rotary 12A	95 hp net	RX-3SP coupe, RX-3 coupe

1978 RX-3 engines

Engine	Rated	Offered in
1.1L / 70 two-rotor rotary 12A	—	RX-3SP coupe, RX-3 coupe

Working on one of these engines?

• Engine displacement from bore and stroke
• Static and dynamic compression ratio
• Which camshaft for your build
• What size carburetor
• Horsepower to torque at any RPM
• Torque converter stall speed

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