🏷️ Basic Information

Make:

Subaru

Model:

Impreza WRX STI RS

Model Variant:

WRX STI RS

Model Generation:

Third Generation (GE/GH/GR/GV)

Model Years Covered:

2006-2007

Chassis Codes:

GDB (Specific to STI models within this generation range)

👋 Introduction

Market Position:

Performance-oriented compact sedan/hatchback, competitor to Mitsubishi Lancer Evolution and Volkswagen Golf GTI.

Competitive Analysis:

The 2006-2007 Impreza WRX STI represented Subaru's pinnacle of rally-bred performance in the Impreza line, offering advanced all-wheel-drive dynamics and a potent turbocharged engine. Its closest rival during this period was the Mitsubishi Lancer Evolution IX.

Key Features:

Symmetrical All-Wheel Drive, turbocharged Boxer engine, performance-tuned suspension, prominent rear spoiler (on STI models), driver-focused cockpit.

📋 Manual Details

Coverage Areas:

All service and repair jobs

Page Count:

Undetermined (typically extensive for factory service manuals)

Manual Type:

Factory Type PDF Service Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Systems Covered:

Engine mechanical, engine electrical, fuel system, exhaust system, transmission (manual & automatic), drivetrain, suspension, steering, brakes, climate control, body electrical, chassis, interior, safety systems, diagnostic procedures, wiring diagrams

Procedures Included:

Routine maintenance, inspections, troubleshooting, component removal and installation, component overhaul, diagnostics, electrical system tracing, fluid changes, brake servicing, suspension alignment, engine tuning, body repair procedures

Technical Depth:

Comprehensive (from basic maintenance to full engine rebuilds and advanced diagnostics)

📊 Manual Specifications

File Format:

PDF

Print Quality:

Professional Quality, highly detailed

Binding Type:

Digital Download (Not applicable for print binding)

Paper Type:

Not applicable (digital format)

⚙️ Engine Specifications

Engine Code:

EJ257 (for WRX STI models)

Engine Type:

2.5L Turbocharged Boxer-4 (EJ257)

Displacement:

2457 cc

Bore X Stroke:

99.5 mm x 79.0 mm

Compression Ratio:

8.2:1

Horsepower:

300 hp @ 6000 rpm (SAE Net)

Torque:

300 lb-ft @ 4000 rpm (SAE Net)

Fuel Induction:

Multi-point Fuel Injection (MPI) with Turbocharger

Recommended Fuel:

Premium Unleaded (91 Octane or higher)

0-60 Mph:

Approx. 4.4 seconds (depending on transmission and conditions)

🔧 Transmission

Transmission Type:

6-speed Manual Transmission (STI models)

Transmission Type:

4-speed Automatic Transmission (WRX models, not typically STI)

Drivetrain:

Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD)

Sti Center Differential Modes:

Auto, Manual (Locked, Diff. Bias Control)

📐 Dimensions

Wheelbase:

103.1 inches (2619 mm)

Length:

173.8 inches (4415 mm)

Width:

69.7 inches (1770 mm)

Height:

56.1 inches (1425 mm)

Curb Weight:

Approx. 3,373 lbs (1530 kg) for STI Sedan

🛡️ Safety Features

NHTSA Rollover Rating:

4/5 Stars (for Sedan models)

Active Features:

All-Wheel Drive, Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), Brake Assist (BA), Traction Control System (TCS), Vehicle Dynamics Control (VDC)

Passive Features:

Front airbags, front side-impact airbags, front and rear curtain airbags, front seatbelt pretensioners, crumple zones

💡 Technology Features

Infotainment System:

Factory-installed audio system with CD player, AM/FM radio. Optional premium audio systems available.

Driver Assistance:

ABS, EBD, BA, TCS, VDC

Connectivity:

Limited by modern standards; typically no integrated Bluetooth or USB ports from factory, but aftermarket options are widely available.

🔧 Maintenance

Oil Change Interval:

Every 3,750 miles or 3 months (severe driving) / 7,500 miles or 6 months (normal driving)

Air Filter Replacement:

Every 15,000 miles or 12 months

Spark Plug Replacement:

Every 30,000-60,000 miles (depending on plug type)

Engine Oil Type:

SAE 0W-30 Synthetic (API Service SM or higher, ILSAC GF-4)

Engine Oil Capacity:

5.5 US quarts (5.2 liters) with filter change

Coolant Type:

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

Transmission Fluid Type Manual:

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

Transmission Fluid Capacity Manual:

Approx. 2.4 US quarts (2.3 liters)

Differential Fluid Type Front:

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

Differential Fluid Type Rear:

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

Known Issues:

Piston ring land failure/ringland fatigue (especially with aggressive tuning), turbocharger wear/failure, clutch wear (heavy use), oil consumption, head gasket issues (less common on EJ257 than earlier EJ25 variants but possible), differential failures if pushed hard or poorly maintained.

📚 Vehicle History

Brand Heritage:

Subaru has a long-standing heritage in motorsports, particularly in the World Rally Championship (WRC), where the Impreza, especially the WRX STI, achieved significant success, influencing its road-going counterparts.

Model Evolution:

The third generation Impreza (GE/GH/GR/GV) represented a significant departure in styling from previous generations, featuring a more rounded and less aggressive design. The STI models retained their performance DNA with enhanced engine output, suspension tuning, and the DCCD.

Production Years Global:

2005-2007 (for this specific generation and body styles)

Manufacturing Locations:

Japan

🏆 Awards & Recognition

Recognitions:

Consistently praised by automotive journalists for its handling, all-wheel-drive capability, and performance-to-price ratio in its segment.