Segment:
Performance Compact Sedan/Hatchback
Key Competitors:
Mitsubishi Lancer Evolution, Volkswagen Golf GTI, Ford Focus RS
Performance Orientation:
Iconic turbocharged Boxer engine, Symmetrical All-Wheel Drive, performance-tuned suspension
Rally Heritage:
Direct lineage from Subaru's successful WRC (World Rally Championship) program
Enthusiast Focus:
Performance driving enthusiasts, DIY mechanics, rally fans
Powertrain:
Engine (EJ257), Transmission (6-speed manual), Drivetrain (Symmetrical All-Wheel Drive), Exhaust System
Chassis:
Suspension (front MacPherson strut, rear double wishbone), Brakes (ventilated discs front/rear, Brembo calipers), Steering (power assisted rack and pinion)
Electrical:
Engine Control Module (ECM), Body Control Module (BCM), Lighting, Instrumentation, Audio System, Power Accessories, Wiring Diagrams
Body:
Exterior body panels, Interior trim, HVAC system, Safety restraints (airbags, seatbelts)
Maintenance:
Scheduled maintenance, Oil changes, Filter replacements, Spark plug replacement, Coolant flush
Diagnostics:
Troubleshooting guides, Diagnostic Trouble Codes (DTCs), Circuit testing, Component testing
Repair:
Engine overhaul, Transmission rebuild, Brake caliper replacement, Suspension component replacement, Electrical component repair
Calibration Adjustment:
Wheel alignment, Throttle body cleaning and relearn, Clutch adjustment
Level Of Detail:
Comprehensive, from basic maintenance to complete engine and transmission rebuilds
Diagnostic Tools:
Includes information for using Subaru Select Monitor (SSM) or equivalent OBD-II diagnostic tools
Engine Type:
Horizontally Opposed (Boxer) Turbocharged 4-Cylinder
Displacement:
2.5 Liters (2457 cc)
Horsepower:
305 hp @ 6000 RPM
Torque:
290 lb-ft @ 4000 RPM
Fuel Delivery:
Multi-Point Fuel Injection (MPFI) with Turbocharger
Recommended Fuel:
Premium Unleaded Gasoline (91 Octane or higher)
Coolant Type:
Subaru Super Coolant (Blue)
Oil Type:
SAE 0W-30 Synthetic (API SN or higher)
Oil Capacity:
5.8 US Quarts (5.5 Liters) with filter
Type:
6-Speed Manual Transmission (TY856WR1MA)
Type:
None for WRX STI trim in 2014
Drivetrain System:
Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD)
Manual Transmission Fluid:
Subaru Gear Oil Extra LPS 75W-90 GL-5
Front Differential Fluid:
Subaru Gear Oil Extra LPS 75W-90 GL-5
Rear Differential Fluid:
Subaru Gear Oil Extra LPS 75W-90 GL-5
NHTSA Overall Rating:
4/5 Stars (as of original testing, may vary by configuration)
Traction Control:
Yes, with multiple modes
Electronic Stability Control:
Yes (Vehicle Dynamics Control - VDC)
Airbags:
Frontal, Side-Curtain, Front Side Impact, Driver's Knee
Seatbelts:
3-point ELR front and rear with pretensioners and force limiters
Head Unit:
Standard touchscreen infotainment system with CD/MP3 player, Bluetooth, and USB connectivity.
Audio System:
Available premium audio system with 9 speakers.
Dccd:
Driver Controlled Center Differential for adjustable torque split between front and rear axles.
Si Drive:
Subaru Intelligent Drive system with Sport (S), Sport Sharp (S#), and Intelligent (I) modes, altering throttle response, engine mapping, and AWD behavior.
Bluetooth:
Standard for hands-free calling and audio streaming.
Auxiliary Input:
Standard 3.5mm auxiliary input jack.
Oil Change:
Every 3,750 miles or 6 months (severe driving) or 7,500 miles or 12 months (normal driving)
Air Filter Replacement:
Every 15,000 miles
Spark Plug Replacement:
Every 30,000 miles (NGK SILFR6A)
Timing Belt Replacement:
Not applicable (uses a timing chain)
Coolant Replacement:
First replacement at 60,000 miles or 5 years, then every 30,000 miles or 2 years
Brake Fluid:
DOT 3 or DOT 4
Power Steering Fluid:
Subaru All-Season PSF or equivalent DEXRON III ATF
Piston Ring Land Cracking:
A known concern in EJ25 engines, especially if modified or driven aggressively without proper maintenance; requires engine rebuild if severe.
Clutch Wear:
Can be accelerated by aggressive driving and frequent use of the DCCD.
Intercooler Hose Leaks:
Leaking intercooler hoses can affect boost pressure and performance.
