🏷️ Basic Information

Make:

Subaru

Model:

Impreza WRX

Year:

2005

Chassis Code:

GDB

Engine Code Primary:

EJ255

👋 Introduction

Segment:

Compact performance sedan/hatchback (World Rally eXtreme)

Target Demographic:

Enthusiast drivers seeking rally-inspired performance and all-wheel-drive capability

Key Competitors:

Mitsubishi Lancer Evolution, Honda Civic Si, Volkswagen GTI

Performance Emphasis:

Turbocharged boxer engine, symmetrical all-wheel drive, performance-tuned suspension

Rally Heritage:

Direct lineage from Subaru's World Rally Championship (WRC) success

📋 Manual Details

Primary Coverage:

Repair and overhaul of Subaru Impreza WRX 2005 vehicles

Target Audience:

Technicians conversant with general automobile practices

Estimated Pages:

1500+

Type:

Workshop Service Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Engine:

Comprehensive engine diagnostics, repair, overhaul, timing belt replacement, turbocharger service, fuel injection system, ignition system, cooling system, lubrication system

Transmission:

Manual transmission (TY756) service, repair, clutch replacement, driveline components, differential service

Brakes:

Hydraulic brake system, ABS (Anti-lock Braking System) service, rotor and pad replacement, caliper repair, brake fluid specifications

Suspension:

Front and rear suspension systems, struts, springs, bushings, wheel alignment procedures, steering system service

Electrical:

Full electrical system schematics, wiring diagrams, fuse box layouts, starter motor, alternator, battery service, lighting systems, instrument cluster, ECU (Engine Control Unit) diagnostics

Body And Chassis:

Body panel removal and installation, door mechanisms, glass replacement, frame straightening (advanced), rust repair procedures

HVAC:

Heating, Ventilation, and Air Conditioning (HVAC) system diagnosis, refrigerant handling, blower motor, evaporator, condenser service

Fuel System:

Fuel tank removal, fuel pump service, fuel filter replacement, fuel pressure testing

Exhaust System:

Exhaust manifold, catalytic converter, muffler service, exhaust leak diagnosis

Cooling System:

Radiator service, thermostat replacement, water pump repair, coolant specifications and bleeding procedures

Maintenance:

Scheduled maintenance, oil change procedures, filter replacements, spark plug replacement, fluid level checks and top-offs

Troubleshooting:

Diagnostic flowcharts, symptom-based troubleshooting for common drivability issues, electrical faults, and mechanical failures

Repair:

Step-by-step repair instructions for all major vehicle systems, including component removal, overhaul, and reassembly

Overhaul:

Complete engine and transmission overhaul procedures, including detailed disassembly and reassembly steps with torque specifications

Diagnostics:

On-Board Diagnostics (OBD-II) information, trouble code (DTC) definitions and clearing procedures, sensor testing and replacement

Installation:

Procedures for installing common aftermarket parts and replacement components (e.g., turbocharger upgrades, suspension components)

Depth:

Comprehensive, suitable for professional mechanics and advanced DIY enthusiasts, covering everything from routine maintenance to complete engine rebuilds.

📊 Manual Specifications

File Type:

Digital PDF

Searchability:

Searchable text for quick information retrieval

Print Quality:

High-resolution, printable pages

Binding:

N/A (Digital PDF)

Paper Type:

N/A (Digital PDF)

⚙️ Engine Specifications

Engine Type:

Horizontally-opposed turbocharged 4-cylinder (Boxer)

Displacement:

2.5 Liters (2457 cc)

Bore X Stroke:

99.5 mm x 79.0 mm

Compression Ratio:

8.4:1

Valve Train:

DOHC, 4 valves per cylinder

Horsepower:

227 hp @ 5600 rpm

Torque:

236 lb-ft @ 3600 rpm

Fuel Delivery:

Sequential multi-port fuel injection (MPI)

Turbocharger:

IHI VF38 (or similar)

Fuel Type:

Unleaded Premium (91 octane or higher recommended)

Engine Oil Type:

API SG, SH, SJ or SL, ILSAC GF-2, GF-3, or GF-4, SAE 5W-30

Engine Oil Capacity:

4.7 US quarts (4.4 liters) with filter

🔧 Transmission

Transmission Type:

5-speed Manual

Transmission Type:

None (Manual only for WRX)

Drivetrain:

Symmetrical All-Wheel Drive (AWD) with front, center, and rear differentials

Manual Transmission Fluid:

API GL-4, SAE 75W-90

Manual Transmission Capacity:

2.2 US quarts (2.1 liters)

📐 Dimensions

Length:

173.8 inches (4415 mm)

Width:

69.9 inches (1775 mm)

Height:

56.1 inches (1425 mm)

Wheelbase:

101.4 inches (2575 mm)

Front Track:

59.1 inches (1500 mm)

Rear Track:

58.9 inches (1495 mm)

Curb Weight:

3131 - 3175 lbs (1420 - 1440 kg) depending on sedan/wagon and options

Gross Vehicle Weight Rating:

4277 lbs (1940 kg)

Trunk Volume Sedan:

11.6 cubic feet (328 liters)

Cargo Volume Wagon:

30.1 cubic feet (852 liters) behind rear seats, 67.1 cubic feet (1900 liters) with rear seats folded

🛡️ Safety Features

NHTSA Front Impact:

5 Stars (2005 Model Year)

NHTSA Side Impact:

4 Stars (2005 Model Year)

ABS:

Standard (4-wheel, 4-channel ABS)

Traction Control:

Standard

Airbags:

Driver and front passenger airbags, optional front side-impact airbags

Seatbelts:

3-point front and rear seatbelts with pretensioners and force limiters

💡 Technology Features

Head Unit:

Base factory AM/FM/CD stereo with optional premium sound system.

Display:

Minimalist dashboard, typically no central color display; basic digital odometer and warning lights.

Cruise Control:

Standard

Stability Control:

No electronic stability control (VDC) on the WRX model for this year; focus is on mechanical grip.

Auxiliary Input:

Not standard on base models; aftermarket solutions common.

Engine Management:

ECU (Engine Control Unit) with programmable parameters for engine timing and fuel mapping, crucial for tuning.

🔧 Maintenance

Oil Change Interval:

Every 3,750 miles or 3 months, whichever comes first (under severe driving conditions, recommended for WRX).

Air Filter Replacement:

Every 15,000 miles or 12 months

Spark Plug Replacement:

Every 60,000 miles (Iridium-tipped plugs)

Timing Belt Replacement:

Every 105,000 miles or 7 years

Brake Fluid:

DOT 3 or DOT 4

Coolant:

Subaru Super Coolant (blue) or equivalent silicate-free, long-life coolant (50/50 mix with distilled water)

Head Gaskets:

While less prevalent in EJ255 than earlier EJ25s, head gasket sealing can still be a concern, especially with modified engines. The manual details inspection and replacement procedures.

Turbo Failure:

Oil starvation or contamination can lead to turbocharger failure. Regular oil changes with correct oil are critical. Manual covers turbo inspection and replacement.

Clutch Wear:

Aggressive driving can accelerate clutch wear. Manual provides clutch inspection and replacement steps.

📚 Vehicle History

Brand Focus:

Subaru is renowned for its horizontally-opposed boxer engines and symmetrical all-wheel-drive systems, contributing to its strong reputation in motorsports and inclement weather performance.

Generation:

Second Generation (GD/GG Impreza) - Launched in 2000 for Japan, 2002 for North America. The 2005 model represents a mid-cycle refresh (often referred to as 'Blobeye' or 'Hawkeye' depending on specific grille/headlight changes).

Wrx Introduction:

The WRX variant was introduced to global markets to capitalize on Subaru's rallying success. The GC8 (first generation) established its performance credentials.

Assembly Location:

Gunma Plant, Japan

🏆 Awards & Recognition

Car And Driver నించS:

Frequently appeared on Car and Driver's '10Best' lists in earlier generations, establishing its performance credentials.

Motorsport Success:

Foundation of the WRX's prestige comes from extensive World Rally Championship (WRC) victories and championships.