🏷️ Basic Information

Make:

Subaru

Model:

Impreza WRX

Year:

2007

Chassis Code:

GD/GG

Engine Code Prefix:

EJ

👋 Introduction

Segment:

Compact Performance Sedan/Wagon (World Rally Blue, Aspen White, Obsidian Black, Steel Silver)

Competitors:

Mitsubishi Lancer Evolution, Volkswagen Golf GTI, Mazdaspeed3

Performance Focus:

Tuned for rally-inspired performance, turbocharged boxer engine, all-wheel drive.

Tuning Potential:

Known for its robust engine and drivetrain, making it a popular platform for modification and tuning.

📋 Manual Details

Coverage:

Full vehicle repair and service

Page Count:

3106

Type:

Workshop Service Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Engine Mechanical:

Detailed procedures for engine disassembly, inspection, repair, and reassembly, including cylinder head, block, pistons, crankshaft, camshafts, valves, timing belt, and oil pump.

Engine Electrical:

Wiring diagrams, component location, diagnostic procedures for ignition system, fuel injection, starting and charging system, sensors, and ECU.

Transmission Manual:

Complete service and repair for the 5-speed manual transmission (TY757), including clutch operation, gearbox disassembly, and component replacement.

Transmission Automatic:

Service and repair for the optional 4-speed automatic transmission (TZ1A5), including torque converter, valve body, and transmission control module.

Drivetrain AWD:

Information on the Subaru Symmetrical All-Wheel Drive system, including center differential, rear differential, and drivetrain components.

Suspension:

Front and rear suspension systems, including struts, springs, control arms, sway bars, and alignment procedures.

Brakes:

Front and rear brake systems (including performance Brembo brakes on some models), ABS, parking brake, bleeding procedures, and component replacement.

Steering:

Power steering system, steering rack, tie rods, and wheel alignment specifications.

Cooling System:

Radiator, thermostat, water pump, cooling fan operation, and coolant specifications.

Fuel System:

Fuel pump, fuel injectors, fuel filter, fuel pressure regulator, and evaporative emissions control system.

Exhaust System:

Exhaust manifold, catalytic converter, muffler, and O2 sensors.

Body Exterior:

Body panels, doors, hood, trunk, bumpers, and glass replacement.

Body Interior:

Dashboard, seats, trim panels, headliner, and interior components.

HVAC:

Heating, Ventilation, and Air Conditioning system, including compressor, condenser, evaporator, and refrigerant.

Electrical Accessories:

Lighting, wipers, horn, power windows, central locking, and audio system.

Safety Systems:

Airbags, seatbelt pre-tensioners, and ABS.

Routine Maintenance:

Detailed instructions for oil changes, filter replacements, fluid checks and changes, spark plug replacement, and belt inspections.

Diagnostics Troubleshooting:

Systematic diagnostic procedures, fault code interpretation (OBD-II), and troubleshooting guides for common and uncommon issues.

Repair Rebuild:

Step-by-step repair and rebuild procedures for all major vehicle components, including engine, transmission, differentials, and suspension.

Component Replacement:

Instructions for replacing individual parts and components, such as alternators, starters, water pumps, brake pads, and body panels.

Alignment Adjustment:

Wheel alignment specifications and adjustment procedures.

Electrical Diagnostics:

Using multimeters, oscilloscopes, and diagnostic scanners for electrical system troubleshooting.

Turbocharger Service:

Specific procedures for the maintenance and repair of the IHI VF39 turbocharger.

Engine Timing:

Precise instructions for setting and verifying engine timing.

Depth:

Comprehensive, covering from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic information.

📊 Manual Specifications

Quality:

High-resolution, searchable PDF with clear text and diagrams.

Printability:

Fully printable, allowing users to print specific sections or the entire manual.

Digital Binding:

N/A (Digital PDF)

Digital Paper:

N/A (Digital PDF)

⚙️ Engine Specifications

Engine Type:

Horizontally-Opposed (Boxer), Turbocharged, Intercooled DOHC

Displacement:

2.5 Liters (2457 cc)

Engine Code:

EJ255

Horsepower:

224 hp @ 5600 rpm (USDM)

Torque:

250 lb-ft @ 3600 rpm (USDM)

Fuel Delivery:

Sequential multi-port fuel injection (MPI)

Fuel Type:

Unleaded Premium Gasoline (91 Octane or higher recommended)

Turbo Model:

IHI VF39

Type:

Top-mounted air-to-air intercooler

🔧 Transmission

Type:

5-Speed Manual (TY757)

Type:

4-Speed Automatic (TZ1A5)

AWD System:

Subaru Symmetrical All-Wheel Drive with viscous coupling center differential (manual) or electronically controlled multi-plate clutch (automatic).

📐 Dimensions

Length:

173.8 inches

Width:

69.7 inches

Height:

57.1 inches

Wheelbase:

104.0 inches

Ground Clearance:

5.1 inches

Curb Weight Manual:

3175 lbs

Curb Weight Automatic:

3290 lbs

🛡️ Safety Features

NHTSA Front Driver:

Good

NHTSA Front Passenger:

Good

IIHS Side Impact:

Acceptable

ABS:

Standard, 4-wheel disc anti-lock braking system

Traction Control:

Standard

Airbags Front:

Standard front dual-stage airbags

Airbags Side:

Optional front side-impact airbags

Seatbelts:

3-point front and rear seatbelts with pre-tensioners and force limiters

💡 Technology Features

Audio System:

Factory AM/FM/CD player with 4 or 6 speakers. Steering wheel audio controls available on some trims.

Cruise Control:

Standard cruise control system.

OBD Ii:

Standard OBD-II port for diagnostic scanning, covered extensively in the manual.

🔧 Maintenance

Oil Change:

Every 3,750 miles or 6 months (severe driving) / 7,500 miles or 12 months (normal driving) - recommended to follow manual for specific conditions.

Timing Belt:

Replace every 90,000 - 105,000 miles or 7 years. Critical due to interference engine design.

Engine Oil:

SAE 5W-30 Synthetic (API SG or higher). Consult manual for specific viscosity under extreme temperatures.

Coolant:

Subaru Super Coolant (blue) or equivalent phosphate-free long-life coolant.

Transmission Fluid Manual:

75W-90 Synthetic Gear Oil (API GL-5)

Transmission Fluid Automatic:

Subaru ATF HP (or Dexron III/Mercon compatible)

Differential Fluid:

75W-90 Synthetic Gear Oil (API GL-5)

Head Gaskets:

While less common on the EJ255 than earlier EJ25 models, head gasket leaks can still occur. Manual provides inspection and repair procedures.

Turbo Failure:

IHI VF39 turbocharger can be prone to failure if oil is not changed regularly or if subjected to excessive heat without proper cool-down. Manual covers inspection and replacement.

Ringland Failure:

Can occur in higher-performance tuned engines due to increased cylinder pressures. Manual details piston inspection and replacement.

Clutch Wear:

High-performance nature of the WRX can lead to accelerated clutch wear, especially with aggressive driving. Manual covers clutch inspection and replacement.

📚 Vehicle History

Rally Roots:

Subaru's long and successful history in the World Rally Championship (WRC) directly influenced the development of the Impreza WRX.

Gc8 To Gd:

The 2007 model represents the latter half of the second generation (GD/GG chassis) Impreza, known for its distinct 'bug-eye' (2000-2002) and 'blob-eye' (2003-2005) to 'hawk-eye' (2006-2007) styling evolutions.

Manufacturing Location:

Ota, Gunma Prefecture, Japan

🏆 Awards & Recognition

Car And Driver તિહાસ:

Often featured on Car and Driver's '10Best' lists in its early generations for its performance value.