🏷️ Basic Information Identification Make: Subaru Model: Impreza Year: 2006 Trim Levels Covered: STI, RS, WRX Codes Chassis Code: GDB (for STI/WRX variants) Engine Codes Mentioned: EJ207 (STI), EJ255 (WRX), EJ253 (RS - non-turbo/naturally aspirated) 👋 Introduction Market Position Vehicle Segment: Compact Performance Sedan/Hatchback Performance Orientation: Rally-inspired performance and motorsport heritage. Competitive Analysis Key Competitors 2006: Mitsubishi Lancer Evolution, Subaru WRX STI (other generations), Volkswagen GTI, Mazdaspeed3. Key Features Performance Highlights: Symmetrical All-Wheel Drive (AWD), turbocharged Boxer engines (STI/WRX), driver-focused handling. Manual Value Proposition: Comprehensive, mechanic-grade information for DIY repairs and advanced maintenance, saving on labor costs. 📋 Manual Details Coverage Areas Manual Type: Workshop Service and Repair Manual Language: English Format: ZIP/PDF Page Count Estimated Pages: 1000+ 📖 Manual Coverage Systems Covered Powertrain: Engine (STI, Naturally Aspirated H4SO, Turbocharged H4DOTC), Manual Transmission, Automatic Transmission, Clutch System, Drive Shaft System Chassis And Suspension: Chassis, Front Suspension, Rear Suspension, Wheel & Tire, ABS, Brake System, Power Steering Body And Electrical: Body, Heating & Airconditioning, Entertainment System, Communication System, Security & Locks, Cruise Control, Wiring System Procedures Included General Maintenance: Routine inspections, fluid changes, filter replacements, lubrication. Engine Repair: Engine assembly/disassembly, cylinder head service, piston/ring replacement, timing belt/chain service, turbocharger diagnosis and repair. Transmission Repair: Transmission overhaul (manual and automatic), clutch replacement, driveline component service. Brake System Service: Brake pad/rotor replacement, caliper service, brake fluid flush, ABS system diagnostics. Electrical System Diagnostics: Wiring diagrams, component testing, troubleshooting of lighting, ignition, charging, and accessory systems. Bodywork And Climate Control: Panel repair, interior trim removal, HVAC system service and refrigerant handling. Technical Depth Diagnosis And Troubleshooting: Extensive troubleshooting guides, symptom-based diagnostics, diagnostic trouble codes (DTCs) explanation. Component Overhaul: Detailed procedures for complete disassembly, inspection, repair, and reassembly of major components. Technical Specifications: Torque specifications, clearances, fluid capacities, electrical schematics, emissions data. 📊 Manual Specifications File Format Document Format: PDF File Type: ZIP archive containing PDF(s) Print Quality Printability: All pages are printable Visual Aid Quality: Contains tons of pictures and diagrams Binding Type Binding: Digital (no physical binding) Paper Type Paper Type For Printing: Standard printer paper (user supplied) Compatibility Operating Systems: Windows & Mac Delivery Method Delivery: Instant delivery via email upon payment ⚙️ Engine Specifications Primary Engine Sti Engine Type: 2.5L turbocharged DOHC EJ257 Boxer 4-cylinder (H4DOTC) Wrx Engine Type: 2.5L turbocharged DOHC EJ255 Boxer 4-cylinder (H4DOTC) Rs Engine Type: 2.5L DOHC EJ253 Boxer 4-cylinder (H4SO - Naturally Aspirated) Performance Sti Horsepower Approx: 300 hp Sti Torque Approx: 300 lb-ft Wrx Horsepower Approx: 230 hp Wrx Torque Approx: 235 lb-ft Rs Horsepower Approx: 173 hp Rs Torque Approx: 166 lb-ft Fuel System Fuel Delivery: Multi-point Fuel Injection (MPI) Fuel Type: Unleaded Gasoline (Premium for STI/WRX recommended/required) 🔧 Transmission Standard Sti Transmission: 6-speed Manual Transmission (TS262LWAAA/TS262LWBAA) Wrx Transmission: 5-speed Manual Transmission (TY757VWBAA) or Optional 4-speed Automatic Rs Transmission: 4-speed Automatic Transmission or Optional 5-speed Manual Transmission Features Sti Drivetrain: Symmetrical All-Wheel Drive with Driver-Controlled Center Differential (DCCD) Wrx/Rs Drivetrain: Symmetrical All-Wheel Drive (Full-time AWD) Sti Clutch: Hydraulically operated, Twin-plate (for some STI variants, verify specific VIN) Manual Transmission Fluid Spec: Subaru Extra-S API GL-5 75W-90 (or equivalent) Automatic Transmission Fluid Spec: Subaru ATF-HP (or equivalent) 📐 Dimensions Exterior Wheelbase: Approx. 103.0 inches (2615 mm) Overall Length: Approx. 174.8 inches (4440 mm) Overall Width: Approx. 70.1 inches (1780 mm) Overall Height: Approx. 57.7 inches (1465 mm) Weights Curb Weight Approx Sti: 3,375 lbs (1531 kg) Curb Weight Approx Wrx: 3,200-3,250 lbs (1451-1474 kg) Wheel Bolt Pattern: 5x100 mm Wheel Size Sti: 17x8.0" or 18x8.5" (depending on package) Wheel Size Wrx/Rs: 17x7.0" Tire Size Sti: 225/45R17 or 235/40R18 Tire Size Wrx/Rs: 215/45R17 🛡️ Safety Features Ratings NHTSA Front Driver Impact: Good NHTSA Front Passenger Impact: Good NHTSA Side Driver Impact: Good NHTSA Side Rear Passenger Impact: Good NHTSA Rollover: 4/5 Stars Active Features ABS: Standard (4-wheel Anti-lock Braking System) Traction Control: Available/Standard on some trims Electronic Brake-Force Distribution: Standard (EBD) Passive Features Airbags Front: Driver and Passenger Frontal Airbags Airbags Side: Front Side-Impact Airbags Seatbelts: 3-point height-adjustable front seatbelts with pretensioners and load limiters. 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD player, optional subwoofer, and amplifier. Basic digital display for clock and radio. Display: Limited digital display for climate and audio settings. Driver Assistance Cruise Control: Standard cruise control system (electronic). Connectivity Auxiliary Input: Optional auxiliary audio input jack (may require specific adapter). 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,750 miles (6,000 km) or 3 months (severe driving conditions) / 7,500 miles (12,000 km) or 6 months (normal driving), consult owner's manual for exact specification based on driving habits. Engine Oil Filter Replacement: At every oil change. Air Filter Replacement: Inspect every 15,000 miles (24,000 km), replace as needed. Spark Plug Replacement Sti/Wrx: Approx. 30,000-60,000 miles (50,000-100,000 km), depending on plug type (iridium recommended). Coolant Flush: Initial service at 60,000 miles (100,000...