Segment:
Performance Compact Sedan/Wagon
Target Audience:
Enthusiasts, tuners, DIY mechanics, and professional workshops specializing in Subaru vehicles.
Key Competitors:
Mitsubishi Lancer Evolution, Honda Civic Si, Volkswagen GTI, Ford Focus RS (in spirit, though often higher class)
Performance Focus:
Designed for the performance-oriented WRX model, covering its turbocharged engine and AWD system.
All Wheel Drive:
Detailed information on Subaru's Symmetrical All-Wheel Drive system and its maintenance.
Turbocharging:
In-depth coverage of the EJ205 turbocharged engine's unique requirements and maintenance.
General Coverage:
Complete vehicle repair and service
Specific Systems:
Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical, HVAC, Body, Emissions
Type:
Workshop Service Manual
Engine Mechanical:
Engine assembly, disassembly, cylinder head, pistons, crankshaft, lubrication system, cooling system
Engine Management:
Fuel injection, ignition system, emissions control, ECU diagnosis, turbocharger system
Transmission Drivetrain:
Manual transmission (TY754), clutch, driveshafts, differentials (front, center, rear), AWD system
Suspension Steering:
Front and rear suspension components, struts, springs, bushings, power steering system
Brakes:
Brake system components, hydraulic lines, calipers, rotors, ABS system
Electrical:
Wiring diagrams, lighting, charging system, starting system, instrument cluster, accessories
HVAC:
Air conditioning, heating, ventilation systems
Body Chassis:
Body panels, interior trim, glass, doors, chassis maintenance
Routine Maintenance:
Oil changes, filter replacements, spark plug replacement, fluid checks and changes
Diagnostics Troubleshooting:
Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides
Repair Rebuild:
Component removal, installation, overhaul, and rebuilding procedures
Specification Data:
Torque specifications, clearances, tolerances, diagnostic values
Depth:
Comprehensive: from basic maintenance to complete engine and transmission rebuilds, including advanced diagnostics and electrical schematics.
Type:
Horizontally Opposed (Boxer), turbocharged, intercooled
Displacement:
2.0 Liters (1994 cc)
Bore X Stroke:
92.0 mm x 75.0 mm
Valve Train:
DOHC, 16 valves
Horsepower Hp:
227 hp @ 5600 rpm
Torque Lb Ft:
250 lb-ft @ 3200 rpm
Type:
Sequential Electronic Fuel Injection (Multi-point)
Fuel Type:
Unleaded gasoline, premium octane (91+ RON recommended)
Ignition System:
Distributorless Electronic Ignition (Coil-on-plug)
NHTSA Front Crash Test:
4/5 Stars (Driver and Passenger)
NHTSA Side Impact Front:
4/5 Stars (Front Passenger)
IIHS Moderately Overlap Front:
Good
ABS:
Standard Anti-lock Braking System (ABS)
Traction Control:
Standard All-Wheel Drive system enhances traction
Brake Bias:
Driver-adjustable front/rear brake bias (often via aftermarket) - manual covers stock setup.
Airbags:
Dual front airbags, available side airbags
Seatbelts:
3-point front and rear seatbelts, pretensioners
Body Structure:
Reinforced chassis with energy-absorbing crumple zones
Audio System:
Factory AM/FM/CD player, typically with 4 or 6 speakers. Manual covers wiring and speaker replacement.
Navigation:
Optional factory navigation system (rare on WRX models of this year). Manual may cover its integration.
Cruise Control:
Standard cruise control system. Manual details its operation and components.
Power Accessories:
Power windows, power locks, power mirrors. Manual includes detailed wiring diagrams.
Oil Change Interval:
Every 3,750 miles or 3.75 months, or 7,500 miles/7.5 months for synthetic oil (refer to manual for exact conditions).
Air Filter Replacement:
Every 15,000 miles or 15 months.
Spark Plug Replacement:
Every 30,000 miles (NGK PFR6B recommended).
Timing Belt Replacement:
Every 90,000 miles or 7.5 years. **Critical for EJ205 engine health.**
Engine Oil:
SAE 5W-30 Synthetic (API SG, SH, SJ, or SL). Capacity: 4.5 US qt (4.3 L) with filter.
Coolant:
Subaru Super Coolant (Blue) or equivalent silicate-free, extended-life coolant. 50/50 mix with distilled water. Capacity: ~7.7 US qt (7.3 L)
Transmission Fluid:
GL-4 Hypoid Gear Oil, SAE 75W-90. Capacity: ~2.1 US qt (2.0 L)
Rear Differential Fluid:
GL-5 Hypoid Gear Oil, SAE 75W-90. Capacity: ~0.8 US qt (0.75 L)
Brake Fluid:
DOT 3 or DOT 4 brake fluid.
Piston Ringland Failure:
A known potential issue in EJ205 engines, particularly with aggressive tuning or poor fuel quality. Manual provides insights into engine assembly and lubrication.
Head Gaskets:
While less common than in some other Subaru models of earlier eras, the manual details cylinder head torque and sealing procedures, crucial for prevention.
Clutch Wear:
High-performance driving can accelerate clutch wear; manual covers clutch inspection and replacement procedures.
Performance Roots:
Subaru's history in rally racing (WRC) directly influenced the development of the Impreza WRX.
Generation:
Second Generation (GD/GG chassis), known as 'Blobeye' for the 2004-2005 facelift.
Wrx Introduction:
The WRX (World Rally eXperimental) was launched in Japan in 1992, with global market introduction following.
Manufacturing Location:
Gunma Prefecture, Japan
Production Years:
2000-2007 (GD/GG chassis), with 2005 being a specific model year within this generation.
