🏷️ Basic Information Identification Make: Subaru Model: Impreza Year: 2006 Codes Chassis Code: GD/GG Platform: Subaru Impreza (Second Generation - GD/GG) 👋 Introduction Market Position Vehicle Segment: Compact Car / Rally Sport Target Audience: Enthusiasts, DIY mechanics, performance-oriented drivers Competitive Analysis Key Competitors: Mitsubishi Lancer Evolution, Ford Focus ST, Volkswagen Golf GTI Key Features Vehicle Strengths: All-Wheel Drive (AWD) system, turbocharged performance (STI), rally heritage, practical hatchback/sedan body styles Manual Value Proposition: Empowers owners to perform maintenance and repairs, saving costs and enhancing vehicle understanding. 📋 Manual Details Coverage Areas Manual Type: Workshop Service Repair Manual Language: English Format: PDF Compatibility: Windows, MacOS 📖 Manual Coverage Systems Covered Engine: H4SO (Naturally Aspirated EJ20/EJ25 variations), STI Engine (EJ257 Turbocharged) Transmission: Manual and Automatic Transmissions Chassis: Suspension, Steering, Brakes, Wheels, Tires Body: Body Panels, Doors, Interior Trim, Exterior Trim, Glass, Seals Electrical: Wiring Diagrams, Lighting, Power Accessories, ECUs, Sensors Mechanism And Function: Operation of various vehicle systems Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks, spark plug replacement, belt inspections Troubleshooting: Diagnostic procedures, fault code interpretation, symptom-based troubleshooting Major Repairs: Engine overhaul, transmission rebuild, suspension component replacement, brake system repair Component Replacement: Detailed instructions for replacing specific parts and assemblies Wiring Repair: Soldering, connector repair, harness modification Technical Depth Diagnostic Level: Advanced diagnostics, including ECU data analysis and sensor testing Repair Level: Comprehensive repair procedures, from minor adjustments to complete overhauls Specification Detail: Precise torque specifications, clearances, fluid capacities, and electrical parameters 📊 Manual Specifications File Format File Type: Portable Document Format (PDF) Searchability: Fully searchable text content Print Quality Printability: Printable pages for physical reference Binding Type Binding Style: Digital Download (Not Applicable for physical binding) Paper Type Paper Quality: Digital (Not Applicable for physical paper type) ⚙️ Engine Specifications Primary Engine Naturally Aspirated Engine Code: EJ20/EJ25 (Various displacements depending on market/trim) Naturally Aspirated Configuration: Horizontally-opposed (Boxer) 4-cylinder Naturally Aspirated Displacement: Typically 2.0L or 2.5L Naturally Aspirated Horsepower Range: 165-175 HP (approximate, varies by specific engine/market) Naturally Aspirated Torque Range: 184-192 lb-ft (approximate, varies by specific engine/market) Sti Engine Sti Engine Code: EJ257 Sti Configuration: Turbocharged Horizontally-opposed (Boxer) 4-cylinder Sti Displacement: 2.5 Liters Sti Horsepower: 300 HP (at 6000 rpm) Sti Torque: 290 lb-ft (at 4000 rpm) Fuel System Fuel Delivery: Multi-point Fuel Injection (MPI) Fuel Type: Unleaded gasoline Recommended Octane Rating Sti: 91+ Octane (Premium Unleaded) 🔧 Transmission Standard Standard Transmission Type: 5-Speed Manual Optional Optional Transmission Type: 4-Speed Automatic (Certain trims) Features AWD System: Subaru Symmetrical All-Wheel Drive (Variable torque distribution) Sti AWD Features: Driver Controlled Center Differential (DCCD) Clutch Type: Hydraulically actuated single-plate clutch 📐 Dimensions Exterior Wheelbase: 103.1 inches (2619 mm) Overall Length: 173.8 inches (4415 mm) - Sedan / 174.6 inches (4435 mm) - Wagon Overall Width: 68.1 inches (1730 mm) - Sedan / 68.3 inches (1735 mm) - Wagon Overall Height: 56.1 inches (1425 mm) - Sedan / 57.1 inches (1450 mm) - Wagon Weights Curb Weight Range: 3000 - 3300 lbs (approximate, varies by trim and body style) Sti Curb Weight: 3330 lbs (approximate) Wheels Tires Wheel Size: 16-inch, 17-inch, or 18-inch (STI) Tire Size Examples: 205/55R16, 215/45R17, 225/40R18 (STI) Bolt Pattern: 5x100mm 🛡️ Safety Features Ratings NHTSA Front Impact Driver: Good (2006 Model Year) NHTSA Front Impact Passenger: Good (2006 Model Year) IIHS Front Offset Test: Acceptable (2006 Model Year) Active Features Traction Control: Standard on most models, advanced on STI Electronic Stability Control: Available on some trims Anti Lock Brakes: Standard Passive Features Airbags: Frontal airbags (driver and passenger), optional side curtain airbags Seatbelts: 3-point seatbelts with pretensioners Child Seat Anchors: LATCH system 💡 Technology Features Infotainment Audio System: Base AM/FM/CD players with 4 or 6 speakers, optional premium sound systems with subwoofer. Navigation: Optional factory-installed GPS navigation system on select trims. Driver Assistance Cruise Control: Standard on most models. Connectivity Auxiliary Input: Available on higher trims for connecting external audio devices. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,750 miles or 6 months (under severe conditions), 7,500 miles or 12 months (normal conditions) - Consult manual for specifics. Air Filter Replacement: Every 15,000 miles or 12 months Spark Plug Replacement: Platinum: 60,000 miles; Iridium: 100,000 miles Timing Belt Replacement: Not applicable (most EJ series engines use a timing chain or belt with longer intervals, but 2006 models often used a belt requiring replacement around 105,000 miles or 7 years. Verify with manual). Fluid Specifications Engine Oil Type: SAE 5W-30 (API SG or higher, ILSAC GF-2 or higher). Consider 5W-40 for high-performance driving or extreme temperatures. Coolant Type: Subaru Super Coolant (Blue) or equivalent silicate-free, ethylene glycol-based coolant Brake Fluid Type: DOT 3 or DOT 4 Transmission Fluid Manual: API GL-4, SAE 75W-90 (Subaru Extra-S recommended) Transmission Fluid Automatic: Subaru ATF-HP (High Performance) Differential Fluid Front: API GL-5, SAE 75W-90 Differential Fluid Rear: API GL-5, SAE 75W-90 (for standard...