1978 Mazda RX-3 Coupe 5MT
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Photo: Mazda RX-3 at Schaffen-Diest (2014) by Charles01, CC BY-SA 4.0, via Wikimedia Commons
Photo: Techno-Classica 2018, Essen (IMG 9080) by Matti Blume, CC BY-SA 4.0, via Wikimedia Commons
Photo: Techno-Classica 2018, Essen (IMG 9085) by Matti Blume, CC BY-SA 4.0, via Wikimedia Commons
Photo: Mazda RX3 (15982130595) by Jeremy from Sydney, Australia, CC BY 2.0, via Wikimedia Commons
Photo: Mazda RX-3 at Schaffen-Diest (2014) - rear three quarters by Charles01, CC BY-SA 4.0, via Wikimedia Commons
Photos show the RX-3 (1971–1978); trim, color, and model year may differ.
All photo credits
- Photo: Mazda RX-3 at Schaffen-Diest (2014) by Charles01, CC BY-SA 4.0, via Wikimedia Commons
- Photo: Techno-Classica 2018, Essen (IMG 9080) by Matti Blume, CC BY-SA 4.0, via Wikimedia Commons
- Photo: Techno-Classica 2018, Essen (IMG 9085) by Matti Blume, CC BY-SA 4.0, via Wikimedia Commons
- Photo: Mazda RX3 (15982130595) by Jeremy from Sydney, Australia, CC BY 2.0, via Wikimedia Commons
- Photo: Mazda RX-3 at Schaffen-Diest (2014) - rear three quarters by Charles01, CC BY-SA 4.0, via Wikimedia Commons
The 1978 Mazda RX-3 Coupe 5MT is a 90-hp 1.1-liter rotary coupe with a 5-speed manual, synchromesh on all forward gears and rear-wheel drive. It is rated at 23 mpg combined.
It makes 90 horsepower at 6,000 rpm and 94 lb-ft of torque. EPA fuel-economy estimates are 19 mpg city and 28 mpg highway (23 mpg combined).
The RX-3 measures 167.0 inches long on a 91.0-inch wheelbase.
| Spec | Value |
|---|---|
| Vehicle | |
| Body Type | Coupe |
| Powertrain | Gas |
| Engine | |
| Engine Type | 12B twin-rotor Wankel rotary, naturally aspirated, water-cooled |
| Displacement | 1.1 L |
| Horsepower | 90 hp @ 6,000 rpm |
| Torque | 94 lb-ft @ 4000 rpm (SAE net) rpm |
| Valvetrain | Twin-rotor Wankel; side intake, peripheral exhaust; single distributor |
| Compression Ratio | 9.4:1 |
| Injection Type | 2-stage 4-barrel downdraft carburetor |
| Drivetrain | |
| Drive Type | RWD |
| Transmission | |
| Transmission | 5-speed manual, synchromesh on all forward gears |
| Fuel Economy | |
| City | 19 MPG |
| Highway | 28 MPG |
| Combined | 23 MPG |
| Tank Capacity | 15.1 gal |
| Suspension | |
| Front Suspension | Independent strut, coil springs, torsion-bar stabilizer |
| Rear Suspension | Rigid axle, semi-elliptic leaf springs, bias-mounted shock absorbers |
| Front Stabilizer Bar | Yes |
| Turning Diameter | 28.3 ft |
| Brakes | |
| Front Brake Disc | Power-assisted disc, dual circuit |
| Rear Brake Disc | Power-assisted drum |
| Tires & Wheels | |
| Wheels Front | 5J x 13 |
| Wheels Rear | 5J x 13 |
| Tires Front | 175/70SR13 steel-belted radial |
| Tires Rear | 175/70SR13 steel-belted radial |
| Dimensions & Weight | |
| Length | 167 in |
| Width | 63 in |
| Height | 53 in |
| Wheelbase | 91 in |
| Front Track | 52 in |
| Rear Track | 51 in |
| Ground Clearance | 6 in |
| Cargo Volume | 10 ft³ |
Similar cars
Rivals to the 1978 Mazda RX-3 Coupe 5MT with similar size, power and price from around the same years.
Safety & Recalls
No NHTSA data available for the 1978 Mazda RX-3.
Source: US National Highway Traffic Safety Administration (nhtsa.gov). US-market vehicles only; data cached for up to 7 days.