The Impreza WRX STi RS is a rally-bred performance variant known for its turbocharged Boxer engine, Symmetrical All-Wheel Drive, and focused handling.
Manual Value Proposition:
This is the official Subaru factory service manual, providing the same detailed information used by dealership technicians, ensuring accuracy and comprehensiveness for DIY repairs and diagnostics.
📋 Manual Details
Coverage Areas
Manual Coverage:
All models and all repairs A-Z for 2005 Subaru Impreza WRX STi RS
Page Count
Estimated Page Count:
N/A (Digital Download)
Manual Type
Manual Type:
Factory Service Manual (FSM) / Repair Manual / Workshop Manual
Language
Language:
English
Format
File Format:
PDF (within ZIP archive)
📖 Manual Coverage
Systems Covered
Engine Mechanical:
Detailed procedures for engine assembly, disassembly, inspection, and repair.
Premium Unleaded Gasoline (91 octane or higher recommended)
🔧 Transmission
Standard
Transmission Type:
6-Speed Manual Transmission (STi)
Optional
Automatic Transmission Availability:
Typically not available on STi models, WRX models may have auto options not covered by this specific STi manual focus.
Features
Drivetrain:
Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD)
📐 Dimensions
Exterior
Wheelbase:
Approx. 103.5 inches (2630 mm)
Length:
Approx. 173.8 inches (4415 mm)
Width:
Approx. 69.7 inches (1770 mm)
Height:
Approx. 57.1 inches (1450 mm)
Weights
Curb Weight:
Approx. 3,263 lbs (1480 kg) for STi sedan
🛡️ Safety Features
Ratings
NHTSA Front Crash Test Rating:
4/5 Stars (for sedan models of this generation)
IIHS Moderate Overlap Front:
Good (for sedan models of this generation)
Active Features
ABS:
Standard Anti-lock Braking System
Vdc:
Vehicle Dynamics Control (VDC) - Standard on STi
Passive Features
Airbags:
Front airbags, side airbags (optional/standard depending on trim), curtain airbags (optional).
Seat Belts:
3-point front seat belts with pretensioners, 3-point rear seat belts.
💡 Technology Features
Infotainment
Audio System:
Factory radio with CD player, speaker system. Options for premium audio or navigation may have been available.
Driver Assistance
ABS Vdc:
ABS and VDC are key electronic driver aids for this performance model.
Connectivity
Bluetooth:
May be available on select trim levels or as an aftermarket addition, not standard on all 2005 models.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Every 3,750 miles or 6 months (severe service), or 7,500 miles or 12 months (normal service) - consult manual for specifics.
Timing Belt Replacement:
Recommended every 105,000 miles or 105 months for EJ257 engine. Crucial for preventing catastrophic engine damage.
Fluid Specifications
Engine Oil Type:
Refer to manual for specific viscosity grade, but typically 5W-30 or 5W-40 synthetic oil is recommended for performance applications.
Coolant Type:
Subaru Super Coolant (Blue) or equivalent phosphate-free OAT coolant.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid.
Transmission Fluid Type:
Refer to manual for specific manual transmission fluid (MTF) and differential fluid specifications (e.g., GL-5).
Known Issues
Head Gasket Leaks:
While less common on the EJ257 than earlier EJ series, early signs of coolant loss or white smoke can indicate potential head gasket issues.
Piston Ring Land Failure:
Can occur in high-mileage or heavily modified engines due to detonation or improper tuning.
Clutch Wear:
Given the performance nature, clutch wear is accelerated with aggressive driving.
📚 Vehicle History
Brand Heritage
Subaru Rally Heritage:
Subaru's extensive history in the World Rally Championship (WRC) heavily influenced the development of the Impreza WRX and WRX STi models, emphasizing performance, durability, and AWD capability.
Model Evolution
Gd Gg Generation:
The 2005 model is part of the second generation (GD/GG) which debuted in 2000, with significant styling and mechanical updates for 2003 and further refinements leading up to the 2005 model year.
Production
Manufacturing Locations:
Primarily manufactured in Japan.
🏆 Awards & Recognition
Recognitions
Car And Driver 10Best:
The Impreza WRX (and by extension the STi's platform) was often recognized for its performance value and handling in enthusiast publications.
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