Segment:
Performance Compact Sedan/Hatchback
Usp:
Symmetrical All-Wheel Drive, turbocharged boxer engine, rally-bred performance heritage
Competitors:
Mitsubishi Lancer Evolution, Ford Focus RS, Volkswagen Golf GTI/R
Vehicle Type:
All-Wheel Drive Performance Sedan/Hatchback
Engine Mechanical:
Complete disassembly, inspection, and reassembly of EJ257 engine, including lubrication, cooling, fuel, and exhaust systems.
Engine Electrical:
Ignition system, starting system, charging system, ECU, sensors, wiring diagrams, troubleshooting.
Transmission Drivetrain:
Manual transmission, clutch, Symmetrical AWD system, DCCD, front/rear differentials, driveshafts, axles.
Brakes:
Hydraulic system, ABS, brake calipers, rotors, pads, parking brake, bleeding procedures.
Suspension Steering:
Front and rear suspension components (struts, springs, control arms, bushings), steering system, power steering.
Body Chassis:
Body panels, doors, glass, interior trim, chassis components, welding points, alignment.
Electrical System:
Lighting, power windows, locks, mirrors, audio system, climate control, instrument cluster, wiring schematics.
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, tune-ups, inspections.
Troubleshooting:
Diagnostic procedures, fault code interpretation, common problems and solutions.
Repair:
Step-by-step instructions for component removal, replacement, and reassembly for all major vehicle systems.
Rebuilding:
Detailed procedures for rebuilding major components such as engines and transmissions.
Specifications:
Torque specifications, clearances, fluid capacities, electrical values.
Diagnostic Tools:
References to Subaru Select Monitor (SSM) or equivalent diagnostic tools for ECU and system analysis.
Complexity:
Covers everything from basic fluid checks to complete engine and transmission overhauls, suitable for professional technicians and advanced DIYers.
Type:
6-speed Manual Transmission (TS6CM1BAAA)
Type:
Not applicable for STI model in this year
Drivetrain:
Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD)
Manual Transmission Fluid:
Subaru Extra MT Fluid (75W-90 GL-5) or equivalent
Manual Transmission Capacity:
Approximately 2.5 Liters (check manual for exact)
NHTSA Overall Rating:
4 Stars (for 2012 model year)
Traction Control:
Standard (VDC - Vehicle Dynamics Control)
ABS:
Standard (4-wheel Anti-lock Braking System)
Airbags:
Front, Side-Curtain, Front Knee Airbags
Oil Change Interval:
Every 3,750 miles or 6 months (severe duty) / 7,500 miles or 12 months (normal duty) - consult manual
Engine Air Filter:
Inspect every 15,000 miles, replace as needed (typically 30,000 miles)
Cabin Air Filter:
Inspect/replace every 15,000 miles
Spark Plugs:
Replace every 60,000 miles
Engine Oil Viscosity:
0W-30 or 5W-30 (API SN or higher)
Engine Oil Capacity:
4.8 US quarts (4.5 liters) with filter change
Brake Fluid:
DOT 3 or DOT 4
Differential Fluid Front:
Subaru Extra-S Front Differential Fluid or equivalent (75W-90 GL-5)
Differential Fluid Rear:
Subaru Extra-S Rear Differential Fluid or equivalent (75W-90 GL-5)
Engine:
Head gasket leaks, piston ring land failure (especially with aggressive tuning), turbocharger wear. Careful maintenance is crucial.
Transmission:
Clutch wear, occasional synchro issues in high-mileage or aggressively driven vehicles.
Suspension:
Worn bushings, strut/shock absorber degradation over time.
