🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX STI Year: 2011 Generation Generation Code: GR/GV Codes Chassis Code: GVB 👋 Introduction Market Position Positioning: The 2011 Subaru Impreza WRX STI represents the pinnacle of Subaru's rally-bred performance sedans, offering a highly capable all-wheel-drive system and a potent turbocharged engine for enthusiasts seeking track-day performance and spirited driving. Competitive Analysis Competitors: Competes with performance-oriented compact sports sedans such as the Mitsubishi Lancer Evolution, Volkswagen Golf GTI, and Ford Focus RS. Key Features Performance Focus: Symmetrical All-Wheel Drive, Subaru's Driver-Controlled Center Differential (DCCD), Multi-Mode Driver Controlled Center Differential (MTS), Brembo brakes, performance-tuned suspension. Engine Technology: Intercooled turbocharger, Subaru's patented equal-length exhaust headers, Boxer engine layout for lower center of gravity. 📋 Manual Details Coverage Areas Coverage: Comprehensive repair, service, and maintenance procedures for the 2011 Subaru Impreza WRX STI. Page Count Estimated Pages: 2000+ Manual Type Type: Factory Service Manual (FSM) / Workshop Manual Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine: 2.5L EJ257 Turbocharged Boxer Engine: Diagnostics, repair, overhaul, timing belt, cooling, lubrication, fuel delivery, emissions. Transmission: 6-Speed Manual Transmission (TY856): Drivetrain, clutch, gearbox overhaul, differential service, AWD system. Brakes: Brake System: ABS, EBD, brake calipers (Brembo front/rear), pads, rotors, hydraulic lines, parking brake. Suspension: Suspension System: Front MacPherson struts, rear double wishbone, springs, dampers, anti-roll bars, alignment specifications. Steering: Steering System: Power steering pump, rack and pinion, steering column, alignment. Electrical: Electrical System: Wiring diagrams, fuses, relays, battery, alternator, starter, lighting, ignition system, ECU. Body: Body & Chassis: Body panels, doors, hood, trunk, interior trim, structural components, crash safety. HVAC: HVAC System: Air conditioning, heating, ventilation, climate control diagnostics and repair. Infotainment: Audio System: Speaker replacement, head unit troubleshooting. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, spark plug replacement. Diagnostics: Troubleshooting guides, diagnostic trouble codes (DTCs), symptom-based diagnostics. Repair: Engine rebuilds, transmission overhaul, brake caliper replacement, suspension component renewal, electrical component repair. Installation: Component installation, torque specifications for all fasteners. Specifications: Detailed technical specifications for all components and systems. Technical Depth Depth: Deep mechanical and electrical repair, including engine and transmission rebuilds, full system diagnostics, and component-level troubleshooting. 📊 Manual Specifications File Format Format: PDF Searchability: Searchable text for quick information retrieval. Print Quality Quality: High resolution, suitable for printing individual sections or the entire manual. Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: EJ257 Engine Type: 2.5-liter DOHC turbocharged flat-four (Boxer) Performance Horsepower: 305 hp @ 6000 rpm Torque: 290 lb-ft @ 4000 rpm Fuel System Fuel Delivery: Sequential multi-port fuel injection Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended) Engine Management ECU Type: Engine Control Unit (ECU) with programmable parameters for performance tuning. Cooling System Radiator Capacity Liters: 8.7 L Oil System Oil Capacity Liters With Filter: 4.8 L (5.1 US qt) 🔧 Transmission Standard Transmission Type: 6-Speed Manual Transmission Optional Optional Transmission: N/A (Only manual transmission offered) Features Drivetrain: Symmetrical All-Wheel Drive with Driver-Controlled Center Differential (DCCD) and Multi-Mode (MTS). Fluid Specifications Manual Transmission Fluid Type: Subaru Extra-S GL5 75W-90 Gear Oil (or equivalent) Differential Fluid Specifications Front Differential Fluid Type: Subaru Extra-S GL5 75W-90 Gear Oil (or equivalent) Rear Differential Fluid Type: Subaru Extra-S GL5 75W-90 Gear Oil (or equivalent) 📐 Dimensions Exterior Length Mm: 4415 mm Width Mm: 1800 mm Height Mm: 1475 mm Wheelbase Mm: 2650 mm Weights Curb Weight Kg: 1505 kg Gross Vehicle Weight Rating Kg: 1960 kg 🛡️ Safety Features Ratings NHTSA Front Impact Rating: 5-Star NHTSA Side Impact Rating: 5-Star IIHS Top Safety Pick: Yes Active Features Traction Control: Standard Electronic Stability Control: Standard Antilock Brakes: Standard (Brembo) with EBD Passive Features Airbags: Front airbags, front side-impact airbags, front and rear side-curtain airbags. Seatbelts: Three-point seatbelts with pretensioners and load limiters. Body Structure: Ring-shaped reinforcement frame for enhanced crashworthiness. 💡 Technology Features Infotainment Audio System: Standard AM/FM/CD stereo with MP3 capability and 6 speakers. Optional premium audio system available. Display: Multi-function display for trip computer, fuel economy, and system warnings. Driver Assistance Cruise Control: Standard electronic cruise control. Connectivity Auxiliary Input: Standard 3.5mm auxiliary audio input jack. 🔧 Maintenance Service Intervals Oil Change Interval Miles: Every 3,750 miles or 6 months, whichever comes first (under severe driving conditions or performance use). Engine Oil Filter Replacement: With every oil change. Air Filter Replacement: Every 15,000 miles or 12 months. Cabin Air Filter Replacement: Every 15,000 miles or 12 months. Spark Plug Replacement: Every 30,000 miles (NGK iridium type recommended). Timing Belt Replacement: Refer to manual; typically 105,000 miles or 105 months, inspect regularly. Fluid Specifications Coolant Type: Subaru Super Coolant (Blue) or equivalent silicate-free, long-life coolant. Brake Fluid Type: DOT 3 or DOT 4 brake fluid. Known Issues Engine Knock Or Detonation: Common issue in...