🏷️ Basic Information

Make:

Subaru

Model:

Impreza WRX STI

Year:

2013

Chassis Code:

GV/GR

Engine Code:

EJ257

👋 Introduction

Segment:

Performance Compact Sedan/Hatchback

Niche:

Motorsport-inspired, rally-bred performance vehicle with all-wheel drive.

Key Competitors:

Mitsubishi Lancer Evolution, Volkswagen Golf GTI, Ford Focus ST, Honda Civic Si.

Performance Dna:

Legendary turbocharged EJ257 Boxer engine, Subaru's Symmetrical All-Wheel Drive system, driver-focused chassis.

Distinctiveness:

Unique boxer engine configuration, rally heritage, aggressive styling.

📋 Manual Details

General Coverage:

Complete factory service and repair information for the 2013 Subaru Impreza WRX STI.

Estimated Pages:

Hundreds (specific count not provided, but described as 'complete' and allowing full printing).

Type:

Factory Service Repair Manual (FSM)

Language:

English

Format:

Downloadable PDF

📖 Manual Coverage

Powertrain:

Engine mechanical, engine electrical, fuel system, exhaust system, transmission (manual and possibly automatic), drivetrain (AWD system, differentials).

Chassis:

Suspension (front and rear), steering system, brake system, wheels and tires.

Body And Interior:

Body structure, exterior trim, interior trim, seats, climate control system, SRS airbags.

Electrical:

Battery, charging system, starting system, lighting, instrument cluster, audio system, power accessories, body control modules, CAN bus network.

Maintenance:

Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement.

Diagnostics:

Troubleshooting charts, diagnostic trouble codes (DTCs) interpretation, symptom-based troubleshooting, electrical schematic interpretation.

Repair:

Engine overhaul, transmission rebuild, suspension component replacement, brake caliper and rotor replacement, electrical component diagnosis and replacement, body panel repair and replacement.

Installation:

Component installation and removal procedures for major systems.

Depth:

Comprehensive, covering everything from routine maintenance to complete engine and transmission overhauls, including detailed electrical diagrams and diagnostic procedures.

📊 Manual Specifications

File Type:

PDF

Quality:

High-resolution, designed for clear printing of text and diagrams.

Binding:

Not applicable (downloadable PDF), but designed for modular printing.

Paper Quality:

Not applicable (digital), but intended for printing on standard paper.

⚙️ Engine Specifications

Engine Type:

2.5L Turbocharged Boxer-4 (EJ257)

Displacement:

2457 cc

Bore X Stroke:

99.5 mm x 79.0 mm

Compression Ratio:

8.2:1

Horsepower Hp:

305 hp @ 6000 rpm

Torque Lb-Ft:

290 lb-ft @ 4000 rpm

Fuel Delivery:

Sequential multi-point fuel injection

Fuel Type:

Premium Unleaded Gasoline (91+ Octane Recommended)

ECU Type:

Denso

Coolant Type:

Subaru Super Coolant (Blue)

Coolant Capacity Liters:

7.1

🔧 Transmission

Type:

6-Speed Manual Transmission (TY856)

Type:

None (STI exclusively manual for this generation)

AWD System:

Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD)

Differentials:

Helical Front LSD, Torsen Rear LSD

Manual Transmission Fluid:

Subaru Gear Oil GL5 75W-90 (Genuine Subaru or equivalent)

Front Differential Fluid:

Subaru Gear Oil GL5 75W-90 (Genuine Subaru or equivalent)

Rear Differential Fluid:

Subaru Gear Oil GL5 75W-90 (Genuine Subaru or equivalent)

📐 Dimensions

Length Mm:

4415

Width Mm:

1795

Height Mm:

1470

Wheelbase Mm:

2650

Track Width Front Mm:

1530

Track Width Rear Mm:

1535

Ground Clearance Mm:

135

Curb Weight Kg:

1505

Gross Vehicle Weight Rating Kg:

1960

Standard Wheel Size:

18 x 8.5 inches

Standard Tire Size:

245/40R18

Bolt Pattern:

5x114.3

Lug Nut Torque Nm:

120

🛡️ Safety Features

NHTSA Front Driver:

Good

NHTSA Front Passenger:

Good

IIHS Overall Score:

Top Safety Pick (2013 Model Year)

Brake System:

Front: 4-Piston Brembo (12.4-inch rotors), Rear: 2-Piston Brembo (12.4-inch rotors)

ABS:

Yes, with EBD (Electronic Brake-force Distribution)

Traction Control:

Yes, Vehicle Dynamics Control (VDC)

Airbags:

Driver, Front Passenger, Front Side-Impact, Side-Curtain

Seatbelts:

3-point height-adjustable with pretensioners and load limiters

Child Seat Anchors:

LATCH System

💡 Technology Features

Head Unit:

Subaru STARLINK (availability may vary by trim and region)

Audio System:

Harman Kardon premium audio system (optional on some trims)

Connectivity:

Bluetooth hands-free calling and audio streaming, USB port, Auxiliary input.

Cruise Control:

Standard

Keyless Entry Start:

Available on higher trims.

Si Drive:

Subaru Intelligent Drive system with modes like Intelligent (I), Sport (S), and Sport Sharp (S#).

Dccd:

Driver Controlled Center Differential allows manual adjustment of front-to-rear torque split.

🔧 Maintenance

Oil Change Interval Miles Km:

3,750 miles / 6,000 km or 6 months, whichever comes first (severe service), 7,500 miles / 12,000 km or 12 months (normal service).

Air Filter Replacement Miles Km:

15,000 miles / 24,000 km

Cabin Air Filter Replacement Miles Km:

15,000 miles / 24,000 km

Spark Plug Replacement Miles Km:

30,000 miles / 48,000 km (iridium type)

Transmission Fluid Change Miles Km:

30,000 miles / 48,000 km

Engine Oil Type:

SAE 5W-30 Synthetic (API SN or higher, ILSAC GF-5 or higher)

Engine Oil Capacity Liters:

5.5 (with filter)

Brake Fluid Type:

DOT 3 or DOT 4

Power Steering Fluid Type:

Subaru Genuine ATF-HP or Dexron III compatible

Head Gasket Failures:

While the EJ257 is robust, earlier generations were prone to head gasket failures. The 2013 model generally sees improved reliability, but meticulous maintenance is key. The manual will detail specific torque sequences and procedures to mitigate this.

Piston Ringland Failures:

Can occur with aggressive tuning or prolonged high-load operation without proper cooling. Proper manual procedures for engine assembly and tuning advice are crucial.

Clutch Wear:

High performance driving can lead to accelerated clutch wear. The manual provides replacement procedures and torque specifications.

📚 Vehicle History

Motorsport Roots:

Subaru's extensive rally heritage and success in WRC directly influences the WRX STI lineage.

Gv Gr Generation:

This represents the first generation of Impreza WRX STI to deviate from the hatchback-only focus of the previous GR generation, offering both sedan and hatchback body styles (though the manual specifies the sedan typically).

Manufacturing Location:

Gunma Plant, Japan

Model Year Span:

2011-2014 (for the GE/GH/GR/GV generation, with 2013 being a specific iteration).

🏆 Awards & Recognition

Sport Compact Awards:

Often recognized in its class for performance and handling by automotive publications.

Handling Dynamics:

Consistently praised for its sharp steering, responsive suspension, and capable AWD system, making it a benchmark in its segment.