Segment:
Performance Compact Sedan/Hatchback
Usp:
Symmetrical All-Wheel Drive, turbocharged boxer engine, rally-bred performance heritage.
Key Competitors:
Mitsubishi Lancer Evolution, Volkswagen GTI/R, Ford Focus ST/RS, Honda Civic Si.
Performance Focus:
Designed for enthusiasts seeking enhanced performance, handling, and driver engagement.
AWD Capability:
Subaru's signature Symmetrical All-Wheel Drive system provides exceptional traction and stability in various conditions.
Supported Models:
All 2013 Subaru Impreza WRX & WRX STI variants
Supported Engines:
2.5L Turbocharged EJ255 (WRX), 2.5L Turbocharged EJ257 (WRX STI)
Estimated Pages:
Comprehensive (specific count not provided, typical for full service manuals exceeds 1500 pages)
Type:
Complete Service & Repair Manual
Powertrain:
Engine mechanical, engine management, fuel system, ignition system, exhaust system, transmission (manual and automatic), clutch, drivetrain, differentials, AWD system
Chassis:
Suspension (front and rear), steering system, brake system (hydraulic, ABS, EBD), wheels and tires
Body And Electrical:
Body panels, interior trim, HVAC system, lighting system, instrument cluster, power windows, power locks, infotainment system, audio system, airbags, safety systems, wiring diagrams, fuse/relay information
Maintenance:
Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection/replacement
Diagnostics And Troubleshooting:
On-board diagnostics (OBD-II), fault code interpretation, symptom-based troubleshooting, diagnostic procedures for all major systems
Repair And Rebuild:
Engine disassembly and reassembly, transmission overhaul, brake caliper rebuild, suspension component replacement, body panel repair, electrical component replacement
Special Procedures:
Turbocharger diagnostics and replacement, AWD system service, differential service, airbag system precautions and replacement, ECU remapping/tuning considerations
Depth:
Expert Level: Covers everything from routine maintenance to complete engine and transmission rebuilds, including detailed diagnostic flowcharts, torque specifications, and component tolerances.
Wrx Engine Type:
2.5L (2457cc) DOHC Turbocharged Boxer-4 (EJ255)
Wrx Sti Engine Type:
2.5L (2457cc) DOHC Turbocharged Boxer-4 (EJ257) with intercooler and twin-scroll turbocharger
Wrx Horsepower:
265 hp @ 6000 rpm
Wrx Torque:
244 lb-ft @ 2000 rpm
Wrx Sti Horsepower:
305 hp @ 6000 rpm
Wrx Sti Torque:
290 lb-ft @ 4000 rpm
Fuel Type:
Premium Unleaded Gasoline (91 octane or higher recommended)
Fuel Delivery:
Multi-point Sequential Electronic Fuel Injection (MPI)
ECU Type:
Denso ECU (specific part numbers available in manual)
Wrx Transmission:
6-speed Manual Transmission
Wrx Sti Transmission:
6-speed Manual Transmission (STi-specific design)
Optional Transmission:
None for 2013 WRX/STI models.
AWD System:
Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD) on STI models, Viscous Center Coupling on WRX models.
Manual Transmission Fluid:
Subaru Extra S API GL-5 75W-90 Gear Oil (refer to manual for exact part numbers and alternatives)
NHTSA Overall Rating:
4 Stars (typical for this era, consult specific test data)
Braking System:
4-wheel power disc brakes with ABS, EBD, Brake Assist
Stability Control:
Vehicle Dynamics Control (VDC)
Airbags:
Front driver and passenger airbags, front side-impact airbags, front and rear side-curtain airbags
Seatbelts:
3-point height-adjustable front seatbelts with pretensioners and force limiters, rear 3-point seatbelts
Child Seat Anchors:
LATCH (Lower Anchors and Tethers for CHildren) system
Audio System:
Available AM/FM/CD/MP3 stereo with auxiliary input, Bluetooth connectivity, and touchscreen display on higher trims.
Navigation System:
Optional factory-installed GPS navigation system.
Cruise Control:
Standard electronic cruise control.
Bluetooth:
Available Bluetooth hands-free phone and audio streaming.
Headlights:
Halogen projector headlights with available HID (High-Intensity Discharge) on some trims.
Oil Change Interval:
Every 3,750 miles or 6 months (severe conditions) / 7,500 miles or 12 months (normal conditions). Refer to manual for precise Subaru recommendations.
Engine Air Filter:
Inspect every 15,000 miles, replace as needed.
Cabin Air Filter:
Replace every 15,000 miles or 12 months.
Spark Plugs:
Replace at 30,000 miles (NGK iridium specified).
Coolant Replacement:
First change at 30,000 miles, then every 30,000 miles thereafter (Subaru Super Coolant).
Engine Oil Specification:
SAE 0W-30, API SN/SM/SL, ILSAC GF-5 (Subaru recommends their own synthetic oil, e.g., SOA4251360)
Brake Fluid:
DOT 3 or DOT 4
Power Steering Fluid:
Subaru Genuine ATF HP (or equivalentDexron III compatible)
Ring Land Failures:
Potential for piston ring land failures, especially in heavily modified engines or those subjected to extreme conditions. Proper tuning and maintenance are crucial.
Clutch Wear:
Can be subject to accelerated clutch wear due to aggressive driving.
Oil Consumption:
Some EJ25 engines can exhibit increased oil consumption as they age; regular monitoring is advised.
Rally Roots:
Subaru's extensive success in the World Rally Championship (WRC) heavily influenced the development and tuning of the Impreza WRX and WRX STI.
Generations:
The 2013 model represents the latter part of the third generation (GE/GH/GR/GV) of the Impreza, often referred to as the 'hatchback' or 'widebody' generation.
Manufacturing Location:
Japan (Gunma Plant)
Sales Context:
The 2013 model year saw continued strong demand from performance enthusiasts seeking its unique blend of AWD capability and turbocharged power.
