Segment:
Compact Car / Affordable Performance
Target Audience:
Enthusiasts, DIY mechanics, owners seeking in-depth repair knowledge.
Key Competitors:
Mitsubishi Lancer, Honda Civic, Toyota Corolla, Mazda Protege.
All Wheel Drive:
Iconic Subaru Symmetrical All-Wheel Drive system offered on many variants, a significant differentiator.
Rally Heritage:
Strong ties to World Rally Championship (WRC) homologation specials (e.g., WRX variants in later generations), fostering a performance image.
Engine Mechanical:
Complete overhaul, repair, and diagnostics for all engine variants including EJ15, EJ18, EJ20 (Naturally Aspirated and Turbocharged).
Engine Management:
ECU diagnostics, fuel injection system, ignition system, emissions control systems (EVAP, EGR), sensor troubleshooting.
Transmission:
Manual and Automatic transmission repair, overhaul, clutch replacement, gear shift linkage, torque converter.
Drivetrain:
All-Wheel Drive (AWD) system diagnostics and repair, viscous coupling, center differential, front and rear differentials.
Suspension Steering:
Front and rear suspension components (struts, shocks, control arms, sway bars), power steering system, steering rack, wheel alignment.
Brakes:
Front and rear brake systems (disc and drum configurations), ABS diagnostics and repair, brake fluid replacement, brake component replacement.
Electrical System:
Wiring diagrams, charging system (alternator, battery), starting system, lighting (headlights, taillights, interior), fuses, relays, power windows, locks, wipers.
HVAC:
Air conditioning system diagnosis and repair, heater core replacement, blower motor, climate control systems.
Body Chassis:
Body panel repair, door mechanisms, glass replacement, exterior trim, interior trim, chassis structural integrity.
Routine Maintenance:
Oil and filter changes, air filter replacement, spark plug replacement, coolant flush, brake fluid flush, transmission fluid change.
Engine Repair:
Timing belt/chain replacement, head gasket repair, piston and ring replacement, valve adjustment, turbocharger rebuild (for turbo models).
Transmission Repair:
Clutch kit replacement, transmission fluid and filter change (automatic), gear overhaul, seal replacement.
Suspension Steering Repair:
Strut and shock absorber replacement, control arm bushing replacement, ball joint replacement, tie rod end replacement, power steering pump replacement.
Brake System Repair:
Brake pad and rotor replacement, caliper overhaul, wheel cylinder replacement, brake line repair/replacement, ABS sensor replacement.
Electrical Diagnostics:
Troubleshooting electrical faults, component testing, wiring harness repair, module diagnostics.
Troubleshooting Guides:
Step-by-step diagnostic procedures for common and uncommon issues, fault code interpretation.
Diagnostic Procedures:
Detailed diagnostic flowcharts and procedures for identifying root causes of malfunctions.
Rebuild Procedures:
Comprehensive instructions for overhauling major components like engines and transmissions.
Torque Specifications:
Precise torque values for all fasteners to ensure proper assembly and prevent damage.
Clearances Tolerances:
Specific measurements for engine internal clearances, bearing tolerances, and component fits.
Engine Codes:
EJ15, EJ18, EJ20 (SOHC and DOHC)
Engine Configuration:
Horizontally-opposed (Boxer) 4-cylinder
Displacement:
1.5L (EJ15), 1.8L (EJ18), 2.0L (EJ20)
Horsepower Range:
Approx. 95 hp (EJ15) to 217 hp (EJ20 Turbocharged WRX STI variants, though less common in early US models).
Torque Range:
Approx. 130 Nm (EJ15) to 290 Nm (EJ20 Turbocharged).
Fuel Delivery:
Electronic Fuel Injection (EFI), Multi-point Fuel Injection (MPFI)
Fuel Type:
Unleaded Gasoline (Octane rating specified by region and engine variant)
Timing Belt:
Timing Belt Driven (requires regular replacement)
Transmission Type:
5-speed Manual Transmission
Transmission Type:
4-speed Automatic Transmission
Drivetrain Layout:
Symmetrical All-Wheel Drive (AWD) on most models.
Gear Ratios:
Specific ratios vary by model and transmission type, detailed in the manual.
Manual Transmission Fluid:
API GL-5, SAE 75W-90 Gear Oil (Subaru recommend specific fluids; consult manual for exact part numbers/specs).
Automatic Transmission Fluid:
Subaru ATF-HP or equivalent (check manual for precise specification and capacity).
Length:
Approx. 4,335 mm (sedan), 4,350 mm (wagon)
Height:
Approx. 1,405 mm (sedan), 1,425 mm (wagon)
Wheelbase:
Approx. 2,520 mm
Curb Weight:
Approx. 1,200 - 1,400 kg (varies by model and equipment)
Gross Vehicle Weight Rating:
Varies by model, consult vehicle plate.
Oil Change:
Every 7,500 miles (12,000 km) or 6 months, whichever comes first (using synthetic oil recommended).
Timing Belt Replacement:
Every 60,000 miles (96,000 km) or 5 years, whichever comes first. Crucial due to interference engine design.
Spark Plugs:
Every 30,000 - 60,000 miles depending on plug type (check manual).
Coolant Flush:
Every 30,000 miles (48,000 km) or 2 years.
Engine Oil:
API SG or SH, SAE 10W-30 or 10W-40 (check manual for specific viscosity based on temperature).
Coolant:
Subaru Genuine Antifreeze/Coolant (Blue) or equivalent ethylene glycol-based coolant with corrosion inhibitors. 50/50 mix with distilled water.
Brake Fluid:
DOT 3 or DOT 4 brake fluid.
Head Gaskets:
While more prevalent in later EJ25 engines, early EJ series engines can experience head gasket leaks, especially under high stress.
Timing Belt Tensioner:
Failure of the timing belt tensioner can lead to belt slippage and catastrophic engine damage.
Suspension Wear:
Bushings and sway bar links can wear over time, leading to clunking noises and compromised handling.
Oil Leaks:
Common areas include valve cover gaskets and oil pan gaskets.
