🏷️ Basic Information

Make:

Subaru

Model:

WRX

Model Years Covered:

2011, 2012, 2013, 2014

Generation:

Third Generation (GR/GV chassis)

Chassis Codes:

GR (hatchback), GV (sedan)

👋 Introduction

Segment:

Compact Performance Sedan/Hatchback (Sport Compact)

Target Audience:

Enthusiasts, DIY mechanics, professional technicians working on Subaru WRX models.

Key Competitors:

Mitsubishi Lancer Evolution, Volkswagen GTI, Ford Focus RS (in spirit), Mazdaspeed3.

Performance Focus:

Emphasis on turbocharged performance, Symmetrical All-Wheel Drive, and rally-inspired handling.

Manual Value Proposition:

Provides the same in-depth technical information used by authorized Subaru service centers, enabling accurate diagnostics and repairs.

📋 Manual Details

Manual Type:

Factory Repair Manual

Language:

English

Format:

PDF

Estimated Page Count:

Approximately 3000+ pages (typical for full factory service manuals)

📖 Manual Coverage

Engine:

2.5L Turbocharged EJ255/EJ257 Boxer Engine, Engine Mechanical, Engine Lubrication, Engine Cooling, Fuel System, Ignition System, Emission Control System, Engine Control System (ECU), Turbocharger System

Transmission:

6-Speed Manual Transmission (TY856), Clutch System, Transmission Fluid Specifications, Transmission Operation, Maintenance, and Repair

Drivetrain:

All-Wheel Drive (AWD) System, Differential Systems (Front, Center, Rear), Driveshafts, Axles

Brakes:

Brake System (Front & Rear Discs), ABS (Anti-lock Braking System), EBD (Electronic Brake-force Distribution), Brake Fluid Specifications, Brake Component Replacement, Hydraulic System Troubleshooting

Suspension:

Front & Rear Suspension (MacPherson Struts front, Double Wishbone rear), Springs, Dampers, Bushings, Alignment Specifications

Steering:

Power Steering System, Steering Gearbox, Steering Column, Tie Rods, Power Steering Fluid Specifications

Electrical:

Battery, Charging System (Alternator), Starting System (Starter Motor), Lighting System (Headlights, Taillights, Interior), Fuses & Relays, Wiring Diagrams, Body Control Module (BCM), ECU Pinouts

Body And Trim:

Exterior Panels, Doors, Hood, Trunk/Tailgate, Bumpers, Interior Trim, Seating Systems, Glass & Seals

HVAC:

Heating, Ventilation, and Air Conditioning (HVAC) System, Refrigerant, Compressor, Evaporator, Condenser, Controls

Safety Systems:

Airbag System, Seatbelt Pre-tensioners, SRS (Supplemental Restraint System) Components

Maintenance:

Routine Maintenance, Oil Changes, Filter Replacements, Spark Plug Replacement, Fluid Level Checks and Top-offs, Belt Inspection and Replacement

Troubleshooting:

Diagnostic Trouble Codes (DTCs), Symptom-Based Troubleshooting Guides, Component Testing Procedures, Electrical System Diagnostics

Repair:

Component Removal and Installation, Major Overhauls, Engine Rebuilds, Transmission Rebuilds, Body Panel Repair, Electrical Component Replacement

Diagnostics:

OBD-II Diagnosis, Live Data Interpretation, Sensor Testing, Actuator Testing

Depth:

Comprehensive, from basic maintenance to complete vehicle teardown and rebuild. Includes detailed diagrams, torque specifications, and diagnostic procedures.

📊 Manual Specifications

File Type:

PDF

Searchability:

Searchable text for quick information retrieval

Printability:

Printable pages, allowing users to print specific sections or the entire manual

Image Resolution:

High-resolution images and diagrams for clarity, zoomable for detail

Binding:

N/A (Digital PDF format)

Paper:

N/A (Digital PDF format)

⚙️ Engine Specifications

Engine Code:

EJ255 (Base WRX), EJ257 (WRX STI - though this manual is for WRX, differences are noted)

Engine Type:

2.5 Liter DOHC 16-Valve Turbocharged Boxer-4 (Horizontally Opposed)

Horsepower:

Approximately 265 hp @ 6000 rpm (WRX), 305 hp @ 6000 rpm (STI - for context)

Torque:

Approximately 244 lb-ft @ 4000 rpm (WRX), 290 lb-ft @ 4000 rpm (STI - for context)

Bore X Stroke:

99.5 mm x 79.0 mm

Compression Ratio:

8.4:1 (WRX), 8.2:1 (STI - for context)

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI), Turbocharged

Fuel Type:

Unleaded Premium Gasoline (91 octane or higher recommended)

ECU Type:

Denso ECU (specific model number varies, detailed in manual)

🔧 Transmission

Transmission Type:

6-Speed Manual Transmission (TY856)

Clutch Type:

Hydraulically Actuated, Single Dry Plate

AWD System Integration:

Center Differential with Viscous Coupling (VC) and Mechanical Limited-Slip Differential (LSD) for front/rear torque distribution. DCCD (Driver Controlled Center Differential) is specific to STI models.

Transmission Fluid Type:

Subaru Extra-S Gear Oil API GL-5 75W-90 or equivalent

Transmission Fluid Capacity:

Approximately 3.3 Liters (3.5 US Quarts)

📐 Dimensions

Wheelbase:

103.3 inches (2625 mm)

Length:

173.8 inches (4415 mm) (Hatchback), 180.9 inches (4595 mm) (Sedan)

Width:

70.7 inches (1795 mm)

Height:

58.1 inches (1475 mm) (Hatchback), 58.1 inches (1475 mm) (Sedan)

Curb Weight:

Approximately 3325-3373 lbs (1508-1530 kg) depending on trim/body style

Gross Vehicle Weight Rating:

Consult specific vehicle VIN for exact GVWR

Cargo Volume:

Approximately 11.3 cu ft (Hatchback), 11.6 cu ft (Sedan)

Wheel Size:

17-inch (Base WRX), 18-inch (Limited WRX, STI)

Tire Size:

235/45R17 (Base WRX), 245/40R18 (Limited WRX, STI)

Bolt Pattern:

5 x 114.3 mm (5 x 4.5 inches)

🛡️ Safety Features

NHTSA Front Crash Test:

5 Stars (for relevant models and test configurations)

IIHS Crash Test:

Good ratings in various categories for models tested (e.g., moderate overlap frontal, side impact).

AWD System:

Subaru Symmetrical All-Wheel Drive enhances traction and stability.

ABS:

Anti-lock Braking System with Electronic Brake-force Distribution (EBD).

Traction Control:

Vehicle Dynamics Control (VDC) system includes traction and stability control.

Airbags:

Frontal airbags, front side-impact airbags, curtain airbags (coverage varies by trim).

Seatbelts:

3-point pretensioner seatbelts with load limiters.

Body Structure:

Ring-shaped reinforcement frame for enhanced occupant protection.

💡 Technology Features

Audio System:

Available touchscreen infotainment systems with CD player, MP3 capability, auxiliary input, USB port, Bluetooth connectivity, and satellite radio. Higher trims may include navigation.

Cruise Control:

Standard cruise control.

Keyless Entry:

Available keyless entry and push-button start on certain trims.

Bluetooth:

Standard Bluetooth hands-free phone and audio streaming capabilities.

🔧 Maintenance

Oil Change Interval:

Every 3,750 miles or 3 months (severe duty) or 7,500 miles or 6 months (normal duty), depending on driving conditions. Consult manual for specific recommendation.

Engine Air Filter Replacement:

Every 15,000 miles or 12 months.

Cabin Air Filter Replacement:

Every 15,000 miles or 12 months.

Spark Plug Replacement:

Approximately every 60,000 miles (depending on type of spark plug).

Transmission Fluid Change:

Every 30,000 miles (manual transmission).

Engine Oil Type:

SAE 5W-30 Synthetic (API SN or higher, ILSAC GF-5 or higher). Consult manual for specific viscosity based on temperature.

Engine Oil Capacity:

Approximately 5.1 US Quarts (4.8 Liters) with filter change.

Coolant Type:

Subaru Super Coolant (Blue) or equivalent long-life antifreeze.

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid.

Power Steering Fluid Type:

Subaru Genuine Power Steering Fluid or equivalent ATF Dexterron III.

Headgasket Failure:

Less prevalent in EJ255/EJ257 engines compared to earlier generations, but still a potential concern for high-mileage or poorly maintained vehicles. The manual details inspection and replacement procedures.

Ringland Failure:

Can occur in high-performance applications or with improper tuning. The manual covers engine assembly and diagnosis of piston ring issues.

Turbocharger Wear:

Regular oil changes and proper warm-up/cool-down are crucial. Manual covers turbocharger inspection and replacement.

Clutch Wear:

As with any performance manual transmission, clutch wear can be accelerated with aggressive driving. Manual details clutch inspection and replacement.

📚 Vehicle History

Rally Origins:

Subaru's strong association with World Rally Championship (WRC) success, influencing the WRX's DNA.

Third Gen Introduction:

The 2008 model year marked the introduction of the GR (hatchback) and GH (sedan, for other markets, GV for US WRX sedan) chassis, which continued through 2014.

Updates During Period:

Facelifted for the 2011 model year, featuring revised front fascia, grille, headlights, and interior updates. STI models received further mechanical enhancements.

Manufacturing Location:

Ota City, Gunma Prefecture, Japan

🏆 Awards & Recognition

Car And Driver 10Best:

WRX models have frequently appeared on Car and Driver's '10Best' lists in previous generations, highlighting its performance credentials. While the 2011-2014 generation might not have specific individual awards highlighted in the manual, its lineage implies this recognition.

Consumer Reports:

While individual model year ratings vary, Subaru generally receives good marks for reliability and owner satisfaction, particularly for its AWD systems. The manual's factory-level detail supports maintaining this reputation.