🏷️ Basic Information Identification Make: Subaru Model: Impreza Year: 2006 Variant: Impreza WRX, Impreza WRX STi Codes Chassis Code: GDB 👋 Introduction Market Position Market Niche: Performance compact sedan/hatchback, rally-inspired street car Competitive Analysis Competitors: Mitsubishi Lancer Evolution, Volkswagen Golf GTI, Ford Focus ST Key Features Performance Focus: Emphasis on turbocharged Boxer engines, symmetrical all-wheel-drive system, and sporty handling. Manual Value Proposition: Empowers owners to perform a wide range of maintenance and repairs, saving time and money while increasing vehicle knowledge. 📋 Manual Details Coverage Areas Manual Type: Workshop Repair Service Manual Language: English Page Count: Not Specified (Comprehensive) Format: PDF Delivery Method: Instant Download Illustrations: Hundreds of illustrations, exploded diagrams, drawings, and photos. Engine Variants Covered: All engines covered for the 2006 Impreza, Impreza WRX, and Impreza WRX STi. 📖 Manual Coverage Systems Covered Engine: Engine Overhaul and Rebuilding, Engine Performance, Firing Orders, Timing Belt Replacement/Service Procedures, Serpentine Belt Routings with Diagrams Transmission: Transmission Removal and Installation, Transmission In-Car Servicing Brakes: Brakes, Brake Servicing Procedures Suspension: Suspension, Front End and Alignment Procedures and Specifications, U-Joint and CV-Joint Service Procedures Electrical: Wiring Diagrams, Complete Wiring Diagrams Diagnostics: Trouble Codes, Troubleshooting and Diagnostics, Computer Diagnostic Trouble Tree Charts, Computer Diagnostic Codes Climate Control: Air Conditioning Service and Capacities Body And Chassis: Sunroof Wheel Tire: Front end and alignment procedures and specifications. Procedures Included Maintenance: Factory Maintenance Schedules and Charts Repair: Repair Procedures, Step-by-step instructions & pictures on all areas of repair Diagnostics: Trouble shooting and diagnostics Diagrams: Detailed illustrations, exploded diagrams, drawings, photos, Vacuum Diagrams Torque Specifications: Complete torque specifications for all major components. Technical Depth Depth: Comprehensive A-Z coverage for all repair procedures, from basic maintenance to complete engine rebuilding. Troubleshooting Charts: Includes Computer Diagnostic Trouble Tree Charts for systematic problem identification. 📊 Manual Specifications File Format File Type: PDF Compatibility: All Versions of Windows, Mac, iOS, BB, Android, etc. (Requires PDF Reader) Print Quality Printability: Yes (Printable pages for workshop use) Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Wrx Engine Type: EJ255 - 2.5L Turbocharged Boxer Horsepower: Approx. 230 hp @ 5200 rpm Torque: Approx. 235 lb-ft @ 3000 rpm Primary Engine Sti Engine Type: EJ257 - 2.5L Turbocharged Boxer with intercooler sprayer Horsepower: Approx. 300 hp @ 6000 rpm Torque: Approx. 350 lb-ft @ 3600 rpm Fuel System Fuel Delivery: Multi-point Fuel Injection (MPI) Fuel Requirement: Premium Unleaded (91 Octane or higher) Performance Forced Induction: Turbocharged with Top-Mount Intercooler (WRX), Top-Mount Intercooler with Water Sprayer (STi) 🔧 Transmission Standard Wrx Transmission Type: 5-speed Manual Standard Sti Transmission Type: 6-speed Manual Optional Transmission Options: Manual transmission only for all models. Features Drivetrain: Symmetrical All-Wheel Drive (AWD) with Driver Controlled Center Differential (DCCD) on STi models. 📐 Dimensions Exterior Wrx Sedan Length: Approx. 179.3 inches Width: Approx. 69.1 inches Height: Approx. 56.1 inches Exterior Wrx Hatchback Length: Approx. 173.4 inches Width: Approx. 69.1 inches Height: Approx. 58.1 inches Weights Curb Weight Wrx: Approx. 3100-3200 lbs (depending on body style) Curb Weight Sti: Approx. 3250-3350 lbs (depending on body style) 🛡️ Safety Features Ratings NHTSA Front Impact: 4 Stars (Driver), 5 Stars (Passenger) IIHS Front Offset: Good Active Features ABS: Standard Anti-lock Braking System (ABS) AWD: Standard Symmetrical All-Wheel Drive Passive Features Airbags: Front Airbags, Side Curtain Airbags Seatbelts: 3-point Seatbelts with pretensioners 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD player with available premium audio. Driver Assistance Stability Control: Vehicle Dynamics Control (VDC) available on some models, particularly STi. Connectivity Auxiliary Input: Likely an optional or aftermarket addition, not standard across all trims. 🔧 Maintenance Service Intervals Oil Change: Every 3,750 miles or 6 months, or 7,500 miles/12 months depending on driving conditions and oil type used. Timing Belt: Typically every 90,000 to 105,000 miles or 7-8 years for models with timing belts (check specific engine for belt or chain). Fluid Specifications Engine Oil Type: 5W-30 (Synthetic recommended), API SG, SH, SJ, SL, SM or ILSAC GF-II, GF-III, GF-4 Coolant Type: Subaru Genuine Coolant (Blue) Brake Fluid Type: DOT 3 or DOT 4 Known Issues Head Gaskets: Early EJ25 engines in previous generations were prone to head gasket failure. While improved, it remains a potential concern for high-mileage vehicles. Turbocharger Wear: Turbochargers can wear over time, especially with aggressive driving or improper maintenance. Clutch Wear: Clutches can wear out with heavy use or performance driving. 📚 Vehicle History Brand Heritage Brand Focus: Subaru is known for its horizontally-opposed ('Boxer') engines and its pioneering use of All-Wheel Drive (AWD) in passenger cars. Model Evolution Third Generation Impreza: The 2006 model is part of the second generation (GD/GG) Impreza, with a significant facelift for 2004 onwards, often referred to as the 'bug eye' to 'hawkeye' transition. This generation is highly regarded for its rallying heritage. Production Manufacturing Location: Gunma Plant, Japan...