Segment:
Lightweight, affordable sports car
Competitors:
Lotus Elan, Triumph Spitfire, MG Midget (historical); later Porsche Boxster, BMW Z3
Key Selling Points:
Reliability, accessible performance, excellent handling, open-top driving experience, iconic styling
Manual Value Proposition:
Empowers owners and independent mechanics with factory-level repair and maintenance knowledge, crucial for preserving the classic status of the NA Miata.
Primary Coverage:
Workshop service and repair procedures
Secondary Coverage:
Maintenance, diagnostics, troubleshooting
Estimated Pages:
Approximately 1000+ pages (typical for comprehensive workshop manuals)
Type:
Official Factory Workshop Service Manual
Powertrain:
Engine, Fuel System, Ignition System, Exhaust System, Cooling System
Drivetrain:
Transmission (Manual & Automatic), Clutch, Driveshafts, Differential, Axles
Chassis:
Suspension (Front & Rear), Steering System, Brakes (Hydraulic & Parking), Wheels & Tires
Electrical:
Wiring Diagrams, Battery, Charging System, Starting System, Lighting, Instrumentation, Powertrain Control Module (PCM), Body Control Module (BCM)
Body:
Exterior Panels, Interior Trim, Doors, Windows, Seats, HVAC System
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, lubrication
Repair:
Engine overhaul, transmission repair, brake component replacement, suspension component replacement, electrical component repair
Diagnostics:
Troubleshooting charts, diagnostic trouble codes (DTCs), fault finding for all major systems
Specifications:
Torque specifications, tolerances, alignment data, electrical specifications
Special Tools:
Identification and usage of specialized tools required for specific procedures
Depth:
Comprehensive, covering everything from basic fluid checks to complete engine and transmission rebuilds.
Engine Type:
Naturally Aspirated Inline 4-Cylinder
Displacement:
1598 cc (1.6 Liters)
Horsepower:
115 hp @ 6500 rpm (1991-1993 models)
Torque:
100 lb-ft @ 5000 rpm (1991-1993 models)
Fuel Delivery:
Multi-point Fuel Injection (MPI)
Fuel Type:
Unleaded Gasoline (87 Octane or higher recommended)
ECU Type:
Engine Control Unit (ECU) with integrated diagnostics
Transmission Type:
5-Speed Manual
Transmission Type:
4-Speed Automatic
Clutch Type:
Hydraulically Actuated Dry Single Plate Clutch
Manual Transmission Fluid:
GL-1 or GL-4 Gear Oil, SAE 75W-90
Automatic Transmission Fluid:
Dexron III Automatic Transmission Fluid (ATF)
NHTSA Rollover Resistance:
4/5 stars (for soft top models)
Brakes:
Front: Ventilated Discs, Rear: Solid Discs
ABS:
Optional on some models, standard on later NA variants
Airbags:
Driver-side airbag standard
Rollover Protection:
Reinforced windshield frame and optional roll bar
Oil Change:
Every 5,000 miles (8,000 km) or 6 months
Oil Filter Change:
Every 5,000 miles (8,000 km) or 6 months (concurrent with oil change)
Engine Air Filter:
Every 15,000 miles (24,000 km) or 12 months
Spark Plugs:
Inspect every 30,000 miles (48,000 km), replace as needed (typically every 60,000 miles / 96,000 km)
Timing Belt:
Replace every 60,000 miles (96,000 km) or 5 years (critical maintenance item)
Engine Oil Type:
API SG or higher, SAE 10W-30 (preferred) or 10W-40
Engine Oil Capacity:
3.7 US quarts (3.5 liters) with filter
Coolant Type:
Ethylene Glycol-based coolant, Mazda Super Long Life Coolant (or equivalent), mixed 50/50 with distilled water
Brake Fluid Type:
DOT 3 or DOT 4
Common Problems:
Oil leaks (valve cover, rear main seal), cooling system hose degradation, starter motor issues, rust (especially rocker panels, sills, wheel arches), window regulator wear, subframe rust.
Maintenance Recommendations:
Regular inspection for rust, timely replacement of timing belt and associated components (water pump, tensioner), regular brake fluid flushes.
Mazda Motorsport:
Mazda's long history of producing reliable and engaging vehicles, particularly their focus on lightweight sports cars.
Na Generation Launch:
Launched in 1989 as a 1990 model year vehicle, revitalizing the affordable sports car segment.
1991 Updates:
Minor refinements, potential horsepower increase in some markets (check specific region).
1992 Updates:
Introduction of optional driver's side airbag became more common.
1993 Updates:
Further refinements to suspension and interior features, continued availability of ABS.
Manufacturing Location:
Hofu, Yamaguchi Prefecture, Japan
