Positioning:
Performance sedan/wagon that established Subaru's rally heritage in the global market. Competed against established performance models from Mitsubishi (Lancer Evolution), Ford (Escort RS Cosworth), and other homologation specials.
Key Competitors:
Mitsubishi Lancer Evolution I/II/III, Ford Escort RS Cosworth, Opel Kadett GSi, Volkswagen Golf GTI.
Distinguishing Factors:
Symmetrical All-Wheel Drive, turbocharged Boxer engine, rally-bred performance, driver-focused cockpit, distinctive hood scoop.
Powertrain:
Engine, Fuel System, Cooling System, Lubrication System, Ignition System, Exhaust System, Clutch, Manual Transmission, AWD System (Viscous Center Differential, Front/Rear Differentials)
Chassis:
Suspension (Front MacPherson Strut, Rear Multi-Link), Steering System, Brake System (Front Ventilated Discs, Rear Discs on WRX), Wheels and Tires
Body And Electrical:
Body Structure, Exterior Panels, Interior Trim, HVAC System, Electrical System (Wiring Diagrams, Lighting, Fuses, Relays), Starting and Charging System, Instruments and Gauges, Power Accessories
Maintenance:
Scheduled Maintenance, Fluid Changes (Engine Oil, Transmission Fluid, Differential Fluid, Coolant), Filter Replacements, Spark Plug Replacement, Belt Inspections/Replacement
Diagnostics And Repair:
Troubleshooting Guides, Engine Diagnosis, Transmission Repair, Suspension Overhaul, Brake System Service, Electrical Component Testing and Replacement, Body Panel Repair
Performance Tuning:
Information pertinent to stock WRX specifications, though detailed performance tuning might require supplementary resources.
Depth:
Comprehensive. Covers everything from basic fluid checks and adjustments to complete engine and transmission overhauls. Includes detailed diagnostic procedures, specifications, and repair sequences.
Engine Type:
2.0L Horizontally Opposed (Boxer) Turbocharged DOHC 16-valve Inline-4
Horsepower:
Approximately 237-250 PS (177-184 kW) depending on specific market and tune.
Torque:
Approximately 270-300 Nm (199-221 lb-ft) depending on specific market and tune.
Induction:
Sequential Multi-Point Fuel Injection (MPI) with Electronic Throttle Control (on later models within this range).
Fuel Type:
Premium Unleaded Gasoline (95 RON or higher recommended)
Length:
Approx. 4,340 - 4,405 mm (170.9 - 173.4 in) for sedan, 4,350 - 4,415 mm (171.3 - 173.8 in) for wagon
Width:
Approx. 1,690 mm (66.5 in)
Height:
Approx. 1,405 mm (55.3 in) for sedan, 1,420 mm (55.9 in) for wagon
Curb Weight:
Approx. 1,270 - 1,360 kg (2,800 - 3,000 lbs)
Crash Test Data:
Limited publicly available official crash test data for this specific generation and WRX variant in many markets at the time of release. Generally considered robust for its era.
Braking:
Front: Ventilated Disc Brakes; Rear: Solid Disc Brakes (WRX models).
ABS:
Anti-lock Braking System (ABS) typically standard on WRX models.
Airbags:
Driver and passenger front airbags standard.
Seatbelts:
3-point seatbelts with pretensioners.
Head Unit:
Factory fitted single-DIN radio/cassette player with optional CD changer. Later models may have upgraded aftermarket units.
Speakers:
Basic speaker system, typically 4 or 6 speakers. Upgrades are common.
Stability Control:
Traction control and Electronic Stability Control (ESC) were not commonly available on early GC8 WRX models, focusing on mechanical grip from the AWD system.
Bluetooth Usb:
Not originally equipped. Modern aftermarket head units provide these capabilities.
Oil Change:
Typically every 5,000-7,500 miles (8,000-12,000 km) or 6 months, whichever comes first, depending on driving conditions. Consult manual for specifics.
Timing Belt:
Crucial maintenance item. Typically requires replacement every 60,000-90,000 miles (96,000-144,000 km) or 5-7 years. The EJ20G is an interference engine, so timely replacement is critical to prevent catastrophic engine damage.
Engine Oil:
Refer to manual for exact viscosity. Typically 10W-30 or 5W-30 API SG/SH or higher. Capacity: Approx. 4.5 liters (4.8 US quarts) with filter.
Transmission Fluid:
Manual Transmission: API GL-5 SAE 75W-90. Capacity: Approx. 1.9 liters (2.0 US quarts).
Coolant:
Subaru Super Coolant (or equivalent ethylene glycol-based antifreeze) mixed 50/50 with distilled water. Capacity: Approx. 7.0 liters (7.4 US quarts).
Head Gaskets:
While less prevalent than on EJ25 engines, early EJ20G engines can still develop head gasket leaks. Regular inspection is advised.
Turbocharger Wear:
Given the age and performance nature of the vehicle, turbocharger wear, seal leaks, or failure can occur, especially if maintenance intervals for oil changes and air filter replacements were not adhered to.
Suspension Wear:
Bushings, ball joints, and shock absorbers are common wear items on performance vehicles of this era due to spirited driving and age.
Clutch Wear:
Clutch wear is dependent on driving style. Inspection and potential replacement are routine for high-mileage vehicles.
Rally Connection:
Subaru's extensive rally heritage, particularly its success in the World Rally Championship (WRC), heavily influenced the Impreza WRX's development and marketing. The GC8 generation was the first to carry the WRX mantle on a global scale.
First Generation:
The first generation Impreza (GC/GF/GM chassis) was introduced in 1992 as a replacement for the Subaru Legacy. The WRX (World Rally eXperimental) performance variant debuted shortly after, built for homologation for Group A rallying.
Gc8 Updates:
The GC8 WRX underwent several revisions (Type RA, Type R, STI variants) and facelifted versions during its production run, with key changes including engine power upgrades, suspension tweaks, and styling updates. This manual covers the early models of this generation.
Manufacturing Location:
Japan
Production Years:
1992-2000 (GC8 generation for Impreza).
Rally Success:
The Impreza WRX (GC8) became synonymous with Subaru's dominance in the World Rally Championship, securing multiple driver and manufacturer titles during the 1990s, cementing its legendary status.
Enthusiast Following:
Highly regarded by automotive enthusiasts for its raw performance, AWD capability, and rally pedigree. Remains a sought-after classic performance car.
