Segment:
Performance Compact Sedan/Hatchback
Target Audience:
Enthusiasts, Owners seeking DIY maintenance, Independent Repair Shops
Key Competitors:
Mitsubishi Lancer Evolution, Ford Focus RS, Volkswagen Golf GTI/R
Performance Focus:
All-Wheel Drive, Turbocharged Engine, Rally-Bred Pedigree
Manual Value Proposition:
Empowers owners and technicians with in-depth knowledge for optimal performance and longevity
Primary Focus:
Repair, Overhaul, Maintenance, Diagnostics
Secondary Focus:
Troubleshooting, Wiring Diagrams, Specifications
Type:
Workshop Service Repair Manual
Powertrain:
Engine, Turbocharger, Intercooler, Drivetrain, Transmission, Differentials (Front, Center, Rear)
Chassis:
Suspension (Front MacPherson Strut, Rear Double Wishbone), Steering System, Brakes (Front Brembo 4-Piston, Rear Brembo 2-Piston), Wheels & Tires
Electrical:
Engine Control Module (ECM), Body Control Module (BCM), Lighting, Instrumentation, Audio System, SRS Airbag System, ABS/VDC System, Power Accessories
Body:
Exterior Body Panels, Interior Trim, Seating, Glass, Wiper System, HVAC System
Maintenance:
Oil Changes, Filter Replacements, Fluid Checks & Replacements, Spark Plug Service, Belt Inspections & Replacements
Repair:
Engine Overhaul, Transmission Rebuild, Suspension Component Replacement, Brake Pad/Rotor Replacement, Electrical Component Diagnosis & Replacement
Diagnostics:
Fault Code Reading & Interpretation, Component Testing, Performance Diagnostics, Wiring Harness Troubleshooting
Depth Level:
Comprehensive (from basic maintenance to full engine and transmission rebuilds)
Diagnostic Tools Required:
OBD-II Scanner, Multimeter, Specialized Subaru Diagnostic Software (e.g., Subaru Select Monitor - SSM, though specific version not listed)
Type:
2.5L Turbocharged Boxer 4-Cylinder (EJ257)
Horsepower Est:
305 hp @ 6000 rpm
Torque Est:
290 lb-ft @ 4000 rpm
Induction:
Multi-point Fuel Injection with Turbocharging and Intercooling
ECU Type:
Denso ECU (specific part number varies)
Coolant Type:
Subaru Super Coolant (Blue) or equivalent G12/G13 type coolant
Oil Type:
SAE 0W-30 Synthetic (preferred), SAE 5W-30 Synthetic acceptable
Oil Capacity With Filter:
5.8 US Quarts (5.5 Liters)
Engine Variant:
EJ257 (JDM/EDM variants may differ slightly in tune)
Type:
6-Speed Manual (TY757)
Type:
N/A (Manual transmission was standard for WRX STI in most markets)
AWD System:
Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD)
Manual 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
Final Drive Ratio:
3.55:1
NHTSA Overall Rating 2013:
4/5 Stars (Specific model may vary, general Impreza rating)
Stability Control:
Vehicle Dynamics Control (VDC)
Traction Control:
Active Traction Control
Braking System:
Anti-lock Braking System (ABS) with Electronic Brake-force Distribution (EBD) and Brake Assist
Airbags:
Front, Side Curtain, Driver's Knee Airbags
Seatbelts:
3-point ELR front and rear seatbelts with pre-tensioners and force limiters
Frame Construction:
Ring-shaped Reinforcement Frame
Head Unit:
Standard Subaru AM/FM/CD/MP3/WMA player with auxiliary input, USB port, Bluetooth connectivity, and LCD display.
Navigation Option:
Optional touchscreen navigation system available on some trims.
Dccd System:
Driver Controlled Center Differential (DCCD) allows manual adjustment of center differential lock-up for varying traction conditions.
Vdc System:
Vehicle Dynamics Control integrates ABS, traction control, and stability control for enhanced handling and safety.
Bluetooth:
Bluetooth hands-free calling and audio streaming capability
Gauge Cluster:
Performance-oriented gauge cluster with multi-function display, including boost gauge.
Oil And Filter Change:
Every 3,750 miles (6,000 km) or 6 months (severe duty) / 7,500 miles (12,000 km) or 12 months (normal duty)
Air Filter Replacement:
Every 15,000 miles (24,000 km) or 12 months
Cabin Air Filter Replacement:
Every 15,000 miles (24,000 km) or 12 months
Spark Plug Replacement:
Every 60,000 miles (96,000 km)
Transmission Fluid Change:
Every 30,000 miles (48,000 km) or 24 months (for manual transmission)
Coolant Capacity:
Approx. 7.0 US Quarts (6.6 Liters)
Brake Fluid Type:
DOT 3 or DOT 4
Engine Knock Control:
Premature piston ring wear, piston land failure (particularly on piston #3) due to detonation/pre-ignition, especially when modified or poorly maintained.
Clutch Wear:
Early model WRX STIs were known for clutch issues, though 2013 models were generally improved. Aggressive driving can still lead to premature wear.
Suspension Bushings:
Wear in control arm bushings can lead to noise and handling degradation.
Turbocharger Issues:
Oil starvation or contamination can lead to premature turbo failure. Regular oil changes with correct specification oil are critical.
Rally Connection:
Subaru's long and successful history in World Rally Championship (WRC)
Gd To Gr Transition:
This generation (GH/GE/GR/GV) marked a shift from the iconic sedan-based WRX STI to a more global platform, with the GR hatchback becoming a prominent body style. The 2013 model represents a facelift of the GR/GV generation.
Manufacturing Location:
Ota City, Gunma Prefecture, Japan
Production Years For Gv Sti:
2008-2014 (facelifted in 2010 and 2013)
Performance Acclaim:
Consistently praised by automotive journalists for its performance, handling, and all-wheel-drive capabilities.
Long Term Value:
Often cited for its strong resale value and enthusiast following.
Manual Certification:
Factory-authorized service manual content, ensuring accuracy and completeness for technicians.
