🏷️ Basic Information

Make:

Subaru

Model:

Impreza WRX STI

Year:

2013

Chassis Code:

GVB (hatchback)

Engine Code Primary:

EJ257

👋 Introduction

Positioning:

The 2013 Subaru Impreza WRX STI (GVB chassis) represents the pinnacle of Subaru's rally-bred performance lineage for that generation, offering a potent blend of turbocharged power, sophisticated all-wheel-drive grip, and track-ready handling for enthusiasts.

Competitors:

Competed directly with performance variants of the Mitsubishi Lancer Evolution, Ford Focus RS, Volkswagen Golf R, and other sport compacts known for their all-wheel-drive capabilities and turbocharged engines.

Performance Highlights:

Iconic EJ257 2.5-liter turbocharged Boxer engine, aggressive aerodynamic styling, advanced Symmetrical All-Wheel Drive with DCCD, performance-tuned suspension, powerful Brembo brakes, and a driver-focused interior.

📋 Manual Details

Major Systems:

Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical, HVAC, Body, Chassis, Maintenance, Diagnostics, Troubleshooting, Repair.

Estimated Pages:

Over 2000 (Estimated based on typical Subaru workshop manuals of this era).

Type:

Workshop Service Repair Manual (Full Factory)

Language:

English

Format:

Digital Download (PDF)

📖 Manual Coverage

Powertrain:

Detailed coverage of the EJ257 turbocharged Boxer engine, including all internal components, turbocharger system, intercooler, exhaust, and fuel delivery. Covers the Subaru Symmetrical All-Wheel Drive system, including front and rear differentials, DCCD (Driver's Control Center Differential), and center differential. Includes comprehensive transmission service for the 6-speed manual transmission (TY85).

Chassis And Suspension:

Full diagnosis and repair procedures for the MacPherson strut front suspension and multi-link rear suspension. Covers steering system components, including power steering pump and rack. Detailed information on brake system components, including ABS, EBD, and rotor/pad replacement. Includes coverage of the chassis and unibody structure.

Electrical And Electronics:

Comprehensive wiring diagrams for all vehicle systems, including engine control, body control, lighting, audio, and safety systems. Detailed troubleshooting guides for electrical faults, including diagnostic connector locations and scan tool procedures. Covers ECU, TCU, BCM, and other electronic control modules.

Maintenance:

Routine maintenance tasks such as oil changes, filter replacements (oil, air, fuel, cabin), spark plug service, fluid checks and changes (coolant, brake fluid, transmission fluid, differential fluid), tire rotation, and belt inspections.

Diagnostics And Troubleshooting:

Step-by-step diagnostic procedures for common and uncommon issues, including symptoms, possible causes, and diagnostic trouble codes (DTCs). Includes methods for reading and interpreting diagnostic data using OBD-II scanners. Covers engine performance issues, transmission problems, electrical gremlins, and HVAC malfunctions.

Repair And Rebuild:

Detailed instructions for component removal, repair, and reinstallation. Covers major overhauls of the engine, transmission, differentials, and suspension. Includes procedures for replacing clutch assembly, turbocharger, intercooler, radiators, alternators, starters, and various sensors.

Depth:

Expert-level technical information suitable for professional mechanics and advanced DIY enthusiasts. Covers everything from basic adjustments to complete engine and transmission rebuilds, including torque specifications, timing procedures, and assembly sequences.

📊 Manual Specifications

File Format:

PDF

Resolution:

High-resolution, suitable for printing individual pages or the entire manual with clear diagrams and text.

Binding Type For Print:

Printable (User printable, no specific binding mentioned).

Paper Type For Print:

Standard paper recommended for printing.

Search Functionality:

Searchable text within the PDF allows for quick access to specific topics and keywords.

⚙️ Engine Specifications

Engine Type:

Horizontally Opposed (Boxer), Turbocharged, Intercooled, DOHC, 16-valve

Displacement:

2457 cc (2.5 Liters)

Horsepower:

305 hp @ 6000 rpm (US Spec)

Torque:

290 lb-ft @ 4000 rpm (US Spec)

Fuel Delivery:

Multi-Point Fuel Injection (MPI) with Electronic Throttle Control (ETC).

Recommended Fuel:

Premium Unleaded (91 octane or higher recommended).

Coolant Type:

Subaru Super Coolant (Blue) or equivalent silicate-free long-life coolant.

🔧 Transmission

Transmission Type:

6-Speed Manual Transmission (TY85)

Optional Transmission:

None for WRX STI model.

Dccd System:

Driver's Control Center Differential (DCCD) with manual and automatic modes for adjustable torque distribution.

Transmission Fluid:

Subaru Extra-S Gear Oil (75W-90 GL-5) or equivalent.

Rear Differential Fluid:

Subaru Extra-S Gear Oil (75W-90 GL-5) or equivalent.

📐 Dimensions

Length:

4,415 mm (173.8 in)

Width:

1,795 mm (70.7 in)

Height:

1,475 mm (58.1 in)

Wheelbase:

2,650 mm (104.3 in)

Curb Weight:

1,505 kg (3,318 lbs)

Gross Vehicle Weight Rating:

1,920 kg (4,233 lbs)

Trunk Volume:

301 Liters (10.6 cu ft)

🛡️ Safety Features

NHTSA Overall Rating:

5-Star (Likely, based on previous Subaru models and typical safety performance for the era).

IIHS Top Safety Pick:

Likely awarded 'Good' ratings in various tests, potentially a Top Safety Pick designation depending on specific configurations.

Brake Assist:

Yes (BA)

Electronic Brakeforce Distribution:

Yes (EBD)

Traction Control:

Yes (Vehicle Dynamics Control - VDC)

Stability Control:

Yes (VDC)

Airbags:

Front, Side Curtain, Front Side, Driver's Knee Airbags.

Seatbelts:

3-point ELR seatbelts with pretensioners and force limiters.

Child Seat Anchors:

LATCH (Lower Anchors and Tethers for Children) system.

💡 Technology Features

Head Unit:

Standard touchscreen infotainment system with CD player, AM/FM radio, auxiliary input, USB port, and Bluetooth connectivity.

Audio System:

Available premium audio system (e.g., Harman Kardon) with subwoofer.

Cruise Control:

Standard electronic cruise control.

Backup Camera:

Available rear-view parking camera integrated with the infotainment display.

Bluetooth:

Standard Bluetooth hands-free calling and audio streaming.

Usb Ports:

Standard USB port for media playback and device charging.

🔧 Maintenance

Oil Change Interval:

Every 3,750 miles (6,000 km) or 6 months, whichever comes first, under severe driving conditions. 7,500 miles (12,000 km) or 12 months under normal conditions (refer to owner's manual for specific conditions).

Air Filter Replacement:

Every 15,000 miles (24,000 km) or 12 months, or more frequently in dusty conditions.

Spark Plug Replacement:

Every 30,000 miles (48,000 km) for iridium spark plugs.

Timing Belt Interval:

Not applicable; the EJ257 uses a timing chain system.

Engine Oil Capacity:

5.5 US quarts (5.2 Liters) with filter change for EJ257.

Engine Oil Type:

0W-30 or 5W-30 Synthetic Oil meeting API SN or ILSAC GF-5 specifications.

Coolant Capacity:

Approximately 7.4 US quarts (7.0 Liters).

Headgaskets:

While the EJ257 is generally robust, head gasket failures can occur, particularly with modified engines or if maintenance is neglected. The manual provides detailed procedures for diagnosis and replacement.

Ringland Failure:

Can be an issue on higher-mileage or heavily modified EJ257 engines, often exacerbated by detonation or improper tuning. Manual covers engine internals extensively.

Clutch Wear:

Performance driving can lead to accelerated clutch wear. Manual details clutch inspection, replacement, and related components.

Dccd Actuator Issues:

Infrequent issues can arise with the DCCD actuator or controller. Manual provides diagnostic steps for the AWD system.

📚 Vehicle History

Subaru Rally Heritage:

Subaru's deep roots in World Rally Championship (WRC) racing directly influence the WRX STI's design, engineering, and performance capabilities, with a legacy of championship victories.

Gc8 To Gd To Gr Gv:

The 2013 model belongs to the third generation (GR/GV chassis, known as the 'wide body' STI), which evolved from the previous GD chassis and marked a significant shift in styling and platform, eventually leading to the VA chassis generation.

Production Location:

Japan (Gunma Prefecture, Subaru's main manufacturing plant).

Production Years:

Third Generation (GR/GV chassis) WRX STI produced from 2007-2014, with the 2013 model being a mid-cycle update.

🏆 Awards & Recognition

Motorsport Influence:

While specific awards for the 2013 model are varied, the WRX STI lineage consistently garners praise from automotive journalists and enthusiast publications for its performance and rally-inspired DNA.

Performance Reviews:

Frequently lauded for its handling, braking, and powerful engine by automotive magazines like Car and Driver, MotorTrend, and Road & Track.

Emissions Standards:

Meets applicable emissions standards for its model year and market (e.g., EPA, CARB in the US).