🏷️ Basic Information

Make:

Subaru

Model:

WRX

Year:

2007-2009

Chassis Code:

GD/GG

Engine Code:

EJ255 (2.5L Turbocharged Boxer)

👋 Introduction

Positioning:

The Subaru WRX of this generation (GD/GG chassis) is renowned as a performance-oriented, all-wheel-drive compact sedan and wagon, appealing to enthusiasts and rally-sport fans. This manual is essential for owners and independent mechanics looking to maintain and repair these vehicles accurately.

Competitors:

Competes with vehicles like the Mitsubishi Lancer Evolution, Volkswagen GTI, and Ford Focus ST, offering a unique blend of AWD traction and turbocharged boxer engine performance.

Features:

This manual provides the same in-depth information used by Subaru dealership technicians, ensuring accuracy and completeness for all service and repair tasks.

📋 Manual Details

Coverage:

Complete Factory Repair Manual for 2007-2009 Subaru WRX

Page Count:

Estimated 2500+ pages (typical for factory service manuals of this era)

Manual Type:

Factory Service Manual / Repair Manual

Language:

English

Format:

PDF (Digital Download)

📖 Manual Coverage

Engine:

Engine mechanical systems, lubrication, cooling, fuel injection, ignition, turbocharger system, emissions control.

Transmission:

Manual Transmission (5-speed), clutch system, driveline components (front/rear differentials, driveshafts, CV joints).

Brakes:

Hydraulic brake system, ABS, brake fluid specifications, rotor/pad replacement, caliper service, parking brake.

Suspension:

Front/rear suspension systems, struts, springs, control arms, bushings, alignment procedures.

Steering:

Power steering system, steering rack, tie rods, steering column.

Electrical:

Full electrical system schematics, wiring diagrams, component testing, battery, alternator, starter, lighting, fuses, relays.

HVAC:

Heating, Ventilation, and Air Conditioning (HVAC) system service, refrigerant handling, component replacement.

Body:

Body panels, doors, windows, locks, exterior trim, interior trim, structural components.

Restraints:

Airbag system, seat belts, SRS component testing and replacement.

Maintenance:

Scheduled maintenance, oil changes, filter replacements, spark plug replacement, fluid checks and changes.

Troubleshooting:

Diagnostic procedures, fault code interpretation, symptom-based troubleshooting guides.

Repair:

Step-by-step repair instructions for all major vehicle systems, including engine, transmission, brakes, etc.

Diagnostics:

Detailed diagnostic charts, electrical testing procedures, sensor data analysis.

Torque Specifications:

Precise torque values for all critical fasteners.

Special Tools:

Identification and usage instructions for Subaru-specific or recommended special tools.

Depth:

Comprehensive, covering routine maintenance to complete engine and transmission overhauls.

📊 Manual Specifications

File Format:

PDF

Print Quality:

High-resolution scans for clear text and diagrams; zoomable for detailed views.

Binding Type:

N/A (Digital PDF)

Paper Type:

N/A (Digital PDF)

⚙️ Engine Specifications

Engine Type:

EJ255 turbocharged, intercooled, horizontally opposed (Boxer) 4-cylinder

Displacement:

2.5 Liters (2457 cc)

Horsepower:

Approx. 265 hp @ 6000 rpm (varies slightly by year and market)

Torque:

Approx. 244 lb-ft @ 4000 rpm (varies slightly by year and market)

Fuel Delivery:

Sequential multi-port fuel injection (MPI) with electronic throttle control

Fuel Type:

Premium Unleaded Gasoline (91 Octane or higher recommended)

Coolant Type:

Subaru Super Coolant (Blue) or equivalent silicate-free, long-life coolant

Oil Capacity:

4.8 US Quarts (4.5 Liters) with filter change

Oil Viscosity:

5W-30 Synthetic (preferred for performance applications)

🔧 Transmission

Transmission Type:

5-speed Manual Transmission (TY757)

Optional Transmission:

None for WRX model (STi had 6-speed)

Drivetrain:

Symmetrical All-Wheel Drive (AWD) with front helical limited-slip differential and rear viscous coupling limited-slip differential.

Manual Transmission Fluid:

Subaru Extra-S Gear Oil (75W-90 GL-5) or equivalent.

📐 Dimensions

Length:

Sedan: 173.8 in (4415 mm); Wagon: 179.3 in (4555 mm)

Width:

69.7 in (1770 mm)

Height:

Sedan: 57.7 in (1465 mm); Wagon: 56.1 in (1425 mm)

Wheelbase:

101.4 in (2575 mm)

Curb Weight:

Approx. 3180-3350 lbs (1442-1519 kg), depending on body style.

Gross Vehicle Weight Rating:

Typically around 4200 lbs (1905 kg)

Wheel Size:

17x8.0 inches (standard)

Tire Size:

225/45R17 (standard)

Bolt Pattern:

5x100 mm

Lug Nut Torque:

87 ft-lbs (118 Nm)

🛡️ Safety Features

NHTSA Front Impact:

5-Star (Driver and Passenger) for 2007-2008 models.

IIHS Side Impact:

Good for 2007-2008 models.

Active Safety:

All-Wheel Drive (AWD), Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist.

Passive Safety:

Driver and front passenger front and side airbags, front and rear side curtain airbags (standard on some trims/years), front seat active head restraints, 3-point seat belts with pretensioners.

💡 Technology Features

Infotainment System:

Base stereo systems with CD player, AM/FM radio. Optional premium audio systems available. Limited infotainment features by modern standards, focusing on core functionality.

Driver Assistance:

Standard driver aids include ABS, EBD, and Brake Assist. No advanced electronic driver assistance systems like adaptive cruise control or lane keeping assist were typically offered.

Connectivity:

Limited connectivity. May include auxiliary input for audio devices on some models. No Bluetooth or USB connectivity typically found on standard units.

🔧 Maintenance

Oil Change Interval:

Every 3,750 miles (6,000 km) or 6 months for severe driving conditions, 7,500 miles (12,000 km) or 12 months for normal driving. High-performance use (track, spirited driving) dictates more frequent changes, often every 3,000 miles/3 months.

Air Filter Replacement:

Every 15,000 miles (24,000 km) or as needed based on inspection.

Spark Plug Replacement:

Every 30,000-60,000 miles (48,000-96,000 km) depending on plug type (iridium recommended).

Coolant Flush:

Every 30,000 miles (48,000 km) or 3 years.

Timing Belt:

Note: This generation WRX uses a timing CHAIN, not a belt. Chain inspection is recommended at higher mileage intervals (e.g., 100,000 miles).

Brake Fluid:

DOT 3 or DOT 4 (Subaru DOT 3 recommended)

Power Steering Fluid:

Subaru ATF-HP (High Performance) or Dexron III/Mercon compatible fluid.

Clutch Fluid:

DOT 3 or DOT 4 (same as brake fluid)

Engine Knock:

Engine detonation or 'knock' can be an issue, often related to fuel quality, carbon buildup, or improper tuning. The manual provides diagnostic procedures for this.

Turbo Failure:

Turbocharger failures can occur, often linked to oil starvation or lack of proper warm-up/cool-down. Regular oil changes are critical.

Head Gaskets:

While less common on the EJ255 than earlier EJ25 variants, head gasket leaks are still a potential concern for EJ engines, particularly under high stress. The manual details inspection and replacement.

Clutch Wear:

Clutches can wear prematurely with aggressive driving. Manual details clutch inspection and replacement procedures.

📚 Vehicle History

Heritage:

Subaru has a long history of performance and rally racing, originating from its Impreza platform which gained significant global recognition through World Rally Championship (WRC) success.

Evolution 2007:

The 2007 model marked the beginning of the 'third generation' (GD/GG chassis) WRX in North America, featuring revised styling, improved interior, and a new 2.5L turbo engine.

Evolution 2008:

The 2008 model year saw a significant redesign with the introduction of the 'Bugeye' nose treatment, controversial at the time but later appreciated for its aggressive styling. Performance was further refined.

Evolution 2009:

Minor updates for 2009, primarily focused on features and trim levels, continuing the established platform.

Production Years:

2007-2009 (GD/GG Chassis generation in North America)

🏆 Awards & Recognition

Performance Awards:

The WRX consistently received accolades for its performance, handling, and all-wheel-drive capabilities from automotive publications like Car and Driver and MotorTrend during its production run.

Driving Dynamics:

Praised for its sharp steering, responsive chassis, and grip provided by the symmetrical AWD system, making it a favorite for spirited driving and autocross.