🏷️ Basic Information Identification Make: Subaru Model: Impreza / WRX / WRX STI Model Years Covered: 2006, 2007 Codes Chassis Code: GD (Hatchback/Wagon), GG (Sedan) Platform: Subaru Global Platform (precursor to current generation) 👋 Introduction Market Position Segment: Compact Performance Sedan/Hatchback Target Audience: Enthusiast drivers, rally enthusiasts, performance car owners, DIY mechanics Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Volkswagen Golf GTI, Mazdaspeed3 Key Features Drivetrain Layout: Symmetrical All-Wheel Drive (standard on all trims) Performance Focus: WRX and STI trims offer turbocharged performance and enhanced handling Rally Heritage: Direct lineage from Subaru's WRC success 📋 Manual Details Coverage Areas Regions Covered: Global (primarily North American and Japanese market specifications) Page Count Estimated Page Count: 1500+ Manual Type Type: Factory Service Manual / Repair Manual Origin: Official Factory Service Manual Language Language: English Format Format: Digital (PDF) Searchability: Searchable PDF text Printability: Printable 📖 Manual Coverage Systems Covered Engine Mechanical: Yes (EJ20, EJ25, EJ257, EJ255 variants, including turbocharger systems) Engine Management: Yes (ECU, sensors, actuators, fuel injection, ignition, emissions control) Transmission Manual: Yes (5-speed and 6-speed DCCD options) Transmission Automatic: Yes (4-speed automatic for non-turbo models, AWD systems) Drivetrain: Yes (All-Wheel Drive system, differentials, driveshafts, hubs) Suspension: Yes (Front MacPherson strut, Rear multi-link, STI specific tuning) Steering: Yes (Power steering system, steering column) Brakes: Yes (ABS, EBD, ventilated discs, STI Brembo calipers) Electrical System: Yes (Battery, alternator, starter, lighting, power accessories, wiring diagrams) HVAC: Yes (Air conditioning, heating, ventilation) Body And Trim: Yes (Body panels, interior components, glass, seals) Chassis And Frame: Yes (Frame construction, unibody specifications) Procedures Included Scheduled Maintenance: Yes (Oil changes, filter replacements, fluid flushes, belt inspections) Troubleshooting: Yes (Diagnostic flowcharts, symptom-based diagnosis) Engine Repair: Yes (Head gasket replacement, piston/ring service, valve adjustments, turbo rebuild) Transmission Repair: Yes (Clutch replacement, gearbox overhaul, AWD system service) Brake Service: Yes (Pad/rotor replacement, caliper overhaul, bleeding procedures) Suspension And Steering Repair: Yes (Strut replacement, control arm bushing, power steering pump) Electrical Diagnostics: Yes (Component testing, wiring harness repair, ECU flashing) Bodywork And Collision Repair: Yes (Panel replacement, alignment, sealing) HVAC System Repair: Yes (Compressor, evaporator, heater core replacement) Wiring Diagrams: Yes (Comprehensive and color-coded) Technical Depth Depth: Comprehensive (from basic maintenance to complete engine/transmission rebuilds, advanced diagnostics) 📊 Manual Specifications File Format Format Type: PDF Print Quality Resolution: High-resolution, suitable for professional printing Binding Type Binding: N/A (Digital Format) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Impreza 2.5I: 2.5L Naturally Aspirated EJ253 Boxer-4 Wrx: 2.5L Turbocharged EJ255 Boxer-4 Wrx Sti: 2.5L Turbocharged EJ257 Boxer-4 (with stronger internals) Performance Impreza 2.5I Hp: 173 hp @ 5600 rpm Impreza 2.5I Torque: 166 lb-ft @ 4400 rpm Wrx Hp: 224 hp @ 5600 rpm Wrx Torque: 226 lb-ft @ 4000 rpm Wrx Sti Hp: 300 hp @ 6000 rpm Wrx Sti Torque: 350 lb-ft @ 4000 rpm Fuel System Type: Multi-Point Fuel Injection (MPI) Octane Requirement: 91+ octane recommended for WRX/STI; 87 octane for 2.5i Engine Internals Sti Connecting Rods: Forged Sti Pistons: Forged Sti Crankshaft: Nitride-treated forged steel 🔧 Transmission Standard Impreza 2.5I: 5-Speed Manual Wrx: 5-Speed Manual Wrx Sti: 6-Speed Manual with Driver Controlled Center Differential (DCCD) Optional Impreza 2.5I: 4-Speed Automatic Features AWD System Type: Symmetrical All-Wheel Drive with viscous center differential (front/rear open differentials) Dccd Modes: Automatic, Manual (Lock, 50:50, Front-biased, Rear-biased) 📐 Dimensions Exterior Impreza Sedan Length: 4415 mm (173.8 in) Impreza Hatchback Length: 4405 mm (173.4 in) Width: 1740 mm (68.5 in) Height: 1415 mm (55.7 in) for Sedans / 1430 mm (56.3 in) for Hatchbacks Wheelbase: 2620 mm (103.2 in) Ground Clearance: 135 mm (5.3 in) for standard models / 145 mm (5.7 in) for STI Weights Curb Weight Min: 1370 kg (3020 lbs) for 2.5i manual sedan Curb Weight Max: 1505 kg (3318 lbs) for WRX STI hatchback Cargo Sedan Trunk Volume: Approx. 390 L (13.8 cu ft) Hatchback Cargo Volume: Approx. 320 L (11.3 cu ft) behind rear seats, expandable 🛡️ Safety Features Ratings NHTSA Front Crash Test: 5-Star (for both driver and passenger) IIHS Side Impact: Good (for models equipped with side airbags) Active Features ABS: Standard (Anti-lock Braking System) Ebd: Standard (Electronic Brake-force Distribution) Traction Control: Standard (VDC - Vehicle Dynamics Control on some trims) Passive Features Airbags Front: Standard (Driver and Passenger SRS) Airbags Side: Optional (Front Side-Impact Airbags, Curtain Airbags) Seatbelts: 3-point front and rear with pretensioners Child Seat Anchors: LATCH system 💡 Technology Features Infotainment Head Unit: Standard AM/FM/CD player, optional premium audio system (e.g., McIntosh on some STI trims) Display: Basic LCD screen for clock/audio information. No central touchscreen infotainment. Driver Assistance Cruise Control: Standard All Wheel Drive: Core technological feature providing enhanced traction and stability. Connectivity Auxiliary Input: Standard on most models for audio playback. Bluetooth: Not available from factory; aftermarket solutions common. 🔧 Maintenance Service Intervals Oil Change: Every 3,750 miles (severe)...