🏷️ Basic Information Identification Make: Subaru Model: Impreza Model Year: 2002 Generation Generation Code: GD/GG Codes Platform Code: Subaru Global Platform 👋 Introduction Market Position Segment: Compact car, known for its rally heritage and standard All-Wheel Drive (AWD) system. Competitive Analysis Key Competitors 2002: Honda Civic Si, Acura RSX, Mitsubishi Lancer ES/GTS, Ford Focus SVT, Volkswagen Golf GTI, Mazda Protegé MP3/Mazdaspeed Protegé. Key Features Standard AWD: Subaru's signature Symmetrical All-Wheel Drive system provided superior traction and handling, a key differentiator. Performance Variants: Offered in various trims including the WRX model, known for its turbocharged engine and performance focus. Body Styles: Available as a 4-door sedan and a 5-door wagon/hatchback. 📋 Manual Details Coverage Areas Primary Coverage: North America Secondary Coverage: Global (technical specifications may vary slightly by region) Page Count Estimated Page Count: Approximately 1500-2000 pages (typical for FSM of this era) Manual Type Type: Factory Service Manual (FSM) / Workshop Manual / Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, fuel system, ignition system, exhaust system, cooling system, lubrication system, engine electrical systems, transmission (manual and automatic), drivetrain (AWD system, differentials). Chassis: Suspension (front and rear), steering system, brake system (including ABS), wheels and tires. Body And Interior: Body construction, exterior trim, interior trim, seating systems, HVAC (Heating, Ventilation, and Air Conditioning). Electrical And Electronics: Wiring diagrams, lighting systems, power accessories, instrument panel, audio system, immobilizer system, airbags (SRS). Procedures Included Maintenance: Scheduled maintenance intervals, fluid changes (oil, coolant, brake fluid, transmission fluid), filter replacements, spark plug service. Diagnostics: Troubleshooting charts, symptom-based diagnostics, diagnostic trouble codes (DTCs), procedures for using Subaru Select Monitor (SSM). Repair And Rebuild: Component removal and installation, overhaul procedures for engine, transmission, differentials, suspension components, brake calipers. Technical Specifications: Torque specifications for all fasteners, clearances, tolerances, diagnostic values, wiring schematics. Technical Depth Depth: Comprehensive from basic fluid changes and component replacement to complete engine and transmission rebuilds, including in-depth electrical system diagnostics and troubleshooting. 📊 Manual Specifications File Format Format: PDF Searchability: Text-searchable PDF (allows quick keyword searches) Print Quality Quality: High-resolution scans of original factory documentation, suitable for printing individual sections or the entire manual. Binding Type Binding: Digital download (PDF). For printed copies, binding would typically be spiral or perfect bound for workshop use. Paper Type Paper: Digital PDF. Original factory manuals were printed on durable paper stock for workshop environments. ⚙️ Engine Specifications Primary Engine Engine Code: EJ251 (Naturally Aspirated), EJ255 (Turbocharged - WRX) Configuration: Horizontally-opposed (Boxer) 4-cylinder Displacement Na: 2.5 Liters (2457 cc) Displacement Turbo: 2.0 Liters (1994 cc) - EJ205 (early WRX), 2.5 Liters (2457 cc) - EJ255 (later WRX) Performance Horsepower Na: 165 hp @ 5,600 rpm (EJ251) Torque Na: 166 lb-ft @ 4,000 rpm (EJ251) Horsepower Turbo: 227 hp @ 5,600 rpm (EJ205 - WRX), 230 hp @ 5,600 rpm (EJ255 - WRX) Torque Turbo: 217 lb-ft @ 4,000 rpm (EJ205 - WRX), 235 lb-ft @ 3,500 rpm (EJ255 - WRX) Fuel System Induction: Multi-point fuel injection (MPI) / Sequential Electronic Fuel Injection (SEFI) Fuel Type: Unleaded gasoline, 87 octane (91 or higher recommended for WRX models) Compression Ratio Na: 9.7:1 Compression Ratio Turbo: 8.5:1 (EJ205), 8.4:1 (EJ255) 🔧 Transmission Standard Type: 5-speed manual transmission Optional Type: 4-speed automatic transmission Features AWD System Manual: Viscous center coupling (VCS) with mechanical front and rear differentials. AWD System Automatic: Active All-Wheel Drive (Variable Torque Distribution) with electronically controlled clutch pack. Transmission Fluid Manual: GL-5 Gear Oil, SAE 75W-90 Transmission Fluid Automatic: Subaru ATF-HP (or equivalent DEXRON III/MERCON) 📐 Dimensions Exterior Length: Sedan: 173.4 in (4404 mm); Wagon: 174.2 in (4425 mm) Width: 66.9 in (1700 mm) Height: Sedan: 55.1 in (1400 mm); Wagon: 56.3 in (1430 mm) Wheelbase: 100.0 in (2540 mm) Front Track: 58.1 in (1475 mm) Rear Track: 57.7 in (1465 mm) Ground Clearance: 5.8 in (147 mm) (standard models), 7.1 in (180 mm) (WRX models) Weights Curb Weight: Approx. 2,900 - 3,200 lbs (1315 - 1451 kg) depending on trim and drivetrain 🛡️ Safety Features Ratings NHTSA Front Impact: Driver: 4/5 stars, Passenger: 4/5 stars NHTSA Side Impact: Front: 4/5 stars, Rear: 4/5 stars Active Features Braking System: Front ventilated discs, rear solid discs. Optional Anti-lock Braking System (ABS). Traction Control: Available on some higher trims, standard AWD system contributes to traction. Passive Features Airbags: Driver and front passenger airbags. Optional side airbags on some trims. Seatbelts: Three-point seatbelts for all seating positions, pretensioners for front seats. Child Seat Anchors: LATCH (Lower Anchors and Tethers for Children) system. 💡 Technology Features Infotainment Audio System: Factory-installed AM/FM stereo with CD player, optional premium audio system with amplifier and subwoofer. Display: Basic digital clock and radio display. No integrated navigation or large color screens. Driver Assistance ABS: Optional Anti-lock Braking System (ABS) available on some models. Cruise Control: Standard on most...
Troubleshooting charts, symptom-based diagnostics, diagnostic trouble codes (DTCs), procedures for using Subaru Select Monitor (SSM).
Repair And Rebuild:
Component removal and installation, overhaul procedures for engine, transmission, differentials, suspension components, brake calipers.
Technical Specifications:
Torque specifications for all fasteners, clearances, tolerances, diagnostic values, wiring schematics.
Technical Depth
Depth:
Comprehensive from basic fluid changes and component replacement to complete engine and transmission rebuilds, including in-depth electrical system diagnostics and troubleshooting.
📊 Manual Specifications
File Format
Format:
PDF
Searchability:
Text-searchable PDF (allows quick keyword searches)
Print Quality
Quality:
High-resolution scans of original factory documentation, suitable for printing individual sections or the entire manual.
Binding Type
Binding:
Digital download (PDF). For printed copies, binding would typically be spiral or perfect bound for workshop use.
Paper Type
Paper:
Digital PDF. Original factory manuals were printed on durable paper stock for workshop environments.
Unleaded gasoline, 87 octane (91 or higher recommended for WRX models)
Compression Ratio Na:
9.7:1
Compression Ratio Turbo:
8.5:1 (EJ205), 8.4:1 (EJ255)
🔧 Transmission
Standard
Type:
5-speed manual transmission
Optional
Type:
4-speed automatic transmission
Features
AWD System Manual:
Viscous center coupling (VCS) with mechanical front and rear differentials.
AWD System Automatic:
Active All-Wheel Drive (Variable Torque Distribution) with electronically controlled clutch pack.
Transmission Fluid Manual:
GL-5 Gear Oil, SAE 75W-90
Transmission Fluid Automatic:
Subaru ATF-HP (or equivalent DEXRON III/MERCON)
📐 Dimensions
Exterior
Length:
Sedan: 173.4 in (4404 mm); Wagon: 174.2 in (4425 mm)
Width:
66.9 in (1700 mm)
Height:
Sedan: 55.1 in (1400 mm); Wagon: 56.3 in (1430 mm)
Wheelbase:
100.0 in (2540 mm)
Front Track:
58.1 in (1475 mm)
Rear Track:
57.7 in (1465 mm)
Ground Clearance:
5.8 in (147 mm) (standard models), 7.1 in (180 mm) (WRX models)
Weights
Curb Weight:
Approx. 2,900 - 3,200 lbs (1315 - 1451 kg) depending on trim and drivetrain
🛡️ Safety Features
Ratings
NHTSA Front Impact:
Driver: 4/5 stars, Passenger: 4/5 stars
NHTSA Side Impact:
Front: 4/5 stars, Rear: 4/5 stars
Active Features
Braking System:
Front ventilated discs, rear solid discs. Optional Anti-lock Braking System (ABS).
Traction Control:
Available on some higher trims, standard AWD system contributes to traction.
Passive Features
Airbags:
Driver and front passenger airbags. Optional side airbags on some trims.
Seatbelts:
Three-point seatbelts for all seating positions, pretensioners for front seats.
Child Seat Anchors:
LATCH (Lower Anchors and Tethers for Children) system.
💡 Technology Features
Infotainment
Audio System:
Factory-installed AM/FM stereo with CD player, optional premium audio system with amplifier and subwoofer.
Display:
Basic digital clock and radio display. No integrated navigation or large color screens.
Driver Assistance
ABS:
Optional Anti-lock Braking System (ABS) available on some models.
Cruise Control:
Standard on most trims.
Connectivity
Connectivity Features:
Limited connectivity by modern standards. Features include power windows, power locks, and remote keyless entry on higher trims.
🔧 Maintenance
Service Intervals
Oil Change:
Every 3,750 miles or 6 months (severe duty) / 7,500 miles or 6 months (normal duty)
Air Filter Replacement:
Every 15,000 miles or 12 months
Spark Plug Replacement:
Every 60,000 miles (standard models) / 30,000 miles (WRX models with platinum plugs)
Timing Belt Replacement:
Every 105,000 miles or 105 months (for EJ251/EJ255 engines, consult manual for exact recommendation)
Fluid Specifications
Engine Oil:
5W-30 API SG or SH, synthetic blend recommended. Capacity: 4.5 US quarts (4.2 L) with filter.
Coolant:
Subaru Super Coolant (blue) or equivalent; 50/50 mixture with distilled water. Capacity: ~7.1 US quarts (6.7 L)
Brake Fluid:
DOT 3 or DOT 4.
Power Steering Fluid:
Subaru Power Steering Fluid or DEXRON III/MERCON compatible ATF. Capacity: ~1.0 US quart (0.9 L)
Known Issues
Head Gaskets:
While less prevalent than earlier EJ engines, potential for coolant leaks from head gaskets exists. Manual covers inspection and replacement procedures.
Oil Consumption:
Some EJ engines can exhibit higher oil consumption. Manual provides diagnosis for oil consumption issues.
Wrx Turbo Issues:
EJ205/EJ255 turbochargers can be prone to failure if not properly maintained or if oil starvation occurs. Manual details turbocharger inspection and maintenance.
Clutch Wear:
Wear on the clutch assembly in manual transmission models is a common maintenance item. Manual covers clutch inspection and replacement.
📚 Vehicle History
Brand Heritage
Heritage:
Subaru Corporation, a division of Fuji Heavy Industries, known for its automotive and aerospace engineering, particularly for its pioneering use of AWD in passenger cars.
Model Evolution
Generation Launch:
The GD/GG generation of the Impreza debuted for the 2002 model year, marking a significant redesign from the previous GC/GF generation.
Updates:
Facelifted in 2004 (Bugeye to Blobeye) with revised styling and the introduction of the STI model in North America.
Production
Manufacturing Location:
Mainly manufactured in Japan (Gunma Prefecture).
Production Years:
2002-2007 (GD/GG generation)
🏆 Awards & Recognition
Recognitions
Car And Driver Alist:
Impreza WRX frequently featured on Car and Driver's 10Best list for its performance and value.
Motor Trend Car Of The Year:
While not winning, the Impreza platform has been a strong contender and highly regarded by automotive journalists.
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