Market Segment:
Compact Sports Coupe & Sedan
Key Competitors:
Toyota Corolla Levin, Datsun 1200/1300, Honda Civic (early generations)
Unique Selling Proposition:
Mazda's signature rotary engine technology, offering a unique driving experience and compact power unit.
Design Philosophy:
Sporty yet practical design, focusing on driver engagement and agile handling.
Years Covered:
1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978
Estimated Page Count:
Approximately 500+
Manual Type:
Factory Service Repair Manual
Engine Systems:
Rotary Engine (12A), Lubrication, Cooling, Fuel, Ignition, Exhaust
Drivetrain Systems:
Transmission (Manual & Automatic), Clutch, Driveshaft, Differential, Axles
Chassis Systems:
Suspension (Front & Rear), Steering, Brakes (Front Disc, Rear Drum)
Electrical Systems:
Wiring Diagrams, Lighting, Instrumentation, Starting & Charging, Ignition Switch, Fuses & Relays
Body And Interior:
Body Panels, Doors, Windows, Seats, Trim, HVAC System, Wipers
Maintenance Procedures:
Routine Inspections, Oil Changes, Filter Replacements, Spark Plug (Igniter) Gap Adjustment, Apex Seal Inspection
Repair Procedures:
Engine Rebuilds (Rotary), Transmission Overhaul, Brake System Repairs, Suspension Component Replacement, Electrical Component Diagnosis & Repair
Troubleshooting:
Diagnostic Charts, Symptom-Based Troubleshooting Guides, Common Problem Identification
Technical Depth:
Comprehensive (from basic maintenance to full engine and transmission rebuilds)
Diagnostic Capabilities:
Detailed electrical schematics, mechanical specifications, and diagnostic procedures for all major systems.
Engine Type:
Mazda 12A Rotary Engine (Wankel)
Displacement:
1146cc (Two Rotor)
Horsepower Output:
Approx. 110-130 hp (depending on variant and emissions controls)
Torque Output:
Approx. 120-135 lb-ft
Fuel Delivery:
Carbureted (e.g., Hitachi, Mikuni twin-choke)
Rotor Housing Material:
Chromium-plated aluminum alloy
Apex Seals:
Crucial component for sealing; material typically carbon or ceramic composite. Manual details inspection and replacement.
Wheelbase:
Approx. 98.4 inches (2499 mm)
Length:
Approx. 161.6 inches (4105 mm)
Width:
Approx. 63.0 inches (1600 mm)
Height:
Approx. 52.4 inches (1331 mm)
Curb Weight:
Approx. 2100-2300 lbs (950-1040 kg)
Gross Vehicle Weight:
Specified in manual for load capacity.
Wheelbase:
Approx. 98.4 inches (2499 mm)
Wheel Size:
Typically 13-inch or 14-inch
Tire Size:
e.g., 175/70R13, 185/70R13
Crash Test Data:
Limited official data available for this era; manual focuses on repair and maintenance, not NHTSA ratings.
Braking System:
Front Disc, Rear Drum
Steering System:
Recirculating Ball
Seatbelts:
Lap and shoulder belts (front), lap belts (rear) depending on configuration.
Body Construction:
Unibody construction with crumple zones designed for the era.
Audio System:
Basic AM/FM radio, often with an optional cassette player. Aftermarket upgrades common.
Instrument Cluster:
Speedometer, tachometer (redlined at ~7000-7500 RPM for 12A), fuel gauge, temperature gauge, oil pressure warning light.
Antilock Brakes:
Not available on standard models of this era.
Power Steering:
Optional on some trims, standard recirculating ball system.
Oil Change Interval:
Typically every 3,000-5,000 miles (5,000-8,000 km) or 6 months. Manual specifies exact intervals.
Filter Replacement:
Oil filter with every oil change. Air filter as per manual's schedule.
Ignition Maintenance:
Regular inspection and adjustment of spark plug (igniter) gap; replacement as needed.
Coolant Flush:
Every 12-24 months or specified mileage.
Engine Oil Type:
Specific rotary engine oil recommended, often a high-quality conventional or synthetic blend. Manual specifies SAE viscosity and API service rating (e.g., API SF or SG).
Transmission Fluid Manual:
GL-4 gear oil, typically SAE 75W-90 or 80W-90. Manual specifies.
Transmission Fluid Automatic:
Dexron II or equivalent ATF. Manual specifies.
Brake Fluid:
DOT 3 or DOT 4, depending on system design. Manual specifies.
Coolant Type:
Ethylene glycol based antifreeze. Manual specifies mixture ratio and type.
Rotary Engine Considerations:
Apex seal wear, oil seal deterioration, potential for carbon build-up if not maintained. Manual provides detailed inspection and repair procedures.
Carburetor Tuning:
Requires regular adjustment due to sensitivity to altitude and fuel quality. Manual covers tuning procedures.
Chassis Corrosion:
Common in vehicles of this age, especially in rust-prone climates. Manual offers some body repair guidance.
Mazda Rotary Legacy:
Mazda's commitment to rotary engine technology, starting with the Cosmo Sport and continuing with the RX series.
Rx Series Lineage:
Preceded by the Cosmo Sport and followed by the RX-3, RX-4, RX-7.
Rx2 Positioning:
Marketed as a sporty, compact car with unique rotary power, offering a distinct alternative to piston-engined rivals.
Production Years:
1970-1978 (across various markets)
Manufacturing Location:
Japan
Automotive Press Reviews:
Received positive reviews for its sporty handling and unique rotary engine performance, often praised for its value proposition in the sports coupe segment.
Rotary Engine Recognition:
Recognized as an accessible entry point into Mazda's rotary-powered vehicles.
