🏷️ Basic Information Identification Make: Subaru Model: Impreza Product Type: Part Numbers Catalog Generation First Generation Years: 1993-2000 Second Generation Years: 2000-2007 (model year 2002 onwards) Codes Chassis Codes 1St Gen: GC, GF, GM Chassis Codes 2Nd Gen: GD, GG 👋 Introduction Market Position Positioning: The Subaru Impreza, particularly in its first generation, carved a niche as a capable all-wheel-drive performance compact, appealing to enthusiasts and those seeking reliable all-weather capability. Competitive Analysis Competitors 1St Gen: Mitsubishi Lancer Evolution, Ford Escort RS Cosworth, Volkswagen Golf GTI Key Features Platform Emphasis: Subaru's signature symmetrical all-wheel-drive system and horizontally opposed Boxer engine. Performance Variants: Iconic WRX and WRX STI models offered significant performance upgrades over standard trims. 📋 Manual Details Coverage Areas Vehicle Range: 1993-2001 Subaru Impreza models (all trims and engine variants) Page Count Estimated Pages: Varies by specific catalog edition; typically 500+ pages for comprehensive coverage Manual Type Type: Parts Catalog / Parts Identification Manual Language Language: English Format Format: Digital (PDF) or Printed 📖 Manual Coverage Systems Covered Powertrain: Engine, transmission, drivetrain components, exhaust system Chassis Suspension: Suspension components, steering system, braking system, wheels and tires Electrical: Wiring harnesses, lighting, instruments, audio system, basic electrical components Body And Interior: Body panels, bumpers, trim, interior components, seating, glass Procedures Included Identification Methods: Diagrams for component identification, part number cross-referencing Assembly Disassembly References: Illustrations showing assembly order and component relationships Technical Depth Depth: Detailed part identification and cataloging, essential for accurate part ordering and replacement. 📊 Manual Specifications File Format Digital Format: Searchable PDF with high-resolution diagrams Print Quality Print Quality: High-resolution images and clear text for easy readability Binding Type Binding: Perfect bound or spiral bound for printed versions Paper Type Paper Type: Durable, high-quality paper stock suitable for workshop environments ⚙️ Engine Specifications Primary Engine Engine Codes 1St Gen: EJ15, EJ16, EJ18, EJ20, EJ22, EJ25 (DOHC, SOHC, Naturally Aspirated, Turbocharged) Engine Displacement Range: 1.5L to 2.5L Performance Horsepower Range: 90 hp (1.5L NA) to over 250 hp (EJ207/EJ257 WRX STI) Torque Range: 100 lb-ft to 270 lb-ft+ Fuel System Induction Methods: Multi-point Fuel Injection (MPI), Turbocharged with Intercooler Fuel Type: Unleaded Gasoline (Octane requirements vary by engine variant, 91+ recommended for turbocharged models) 🔧 Transmission Standard Transmission Types: 5-speed Manual Transmission (RWD or AWD), 4-speed Automatic Transmission (AWD) Optional Optional Transmissions: Limited-slip differentials (front and rear) available on performance models, viscous coupling center differential standard on AWD. Features AWD System Details: Symmetrical All-Wheel Drive with variable torque distribution. 📐 Dimensions Exterior Body Styles: 2-door Coupe, 4-door Sedan, 5-door Wagon Length Range: Approx. 4,340 - 4,430 mm (Sedan) Width Range: Approx. 1,690 - 1,750 mm Height Range: Approx. 1,400 - 1,470 mm Wheelbase: Approx. 2,510 mm Weights Curb Weight Range: Approx. 1,200 - 1,450 kg 🛡️ Safety Features Ratings NHTSA Ratings General: Not extensively rated by NHTSA for this era; early models predate more rigorous testing. Active Features Braking System: Front ventilated discs, Rear solid discs (or drums on base models); optional ABS. Traction Control: Available on some higher trims and later models, especially AWD variants. Passive Features Airbags: Driver and passenger airbags became standard on later models within this range. Body Structure: Reinforced body structure for improved crashworthiness. 💡 Technology Features Infotainment Audio Systems: Standard AM/FM/Cassette or CD players, often with basic speaker systems. Upgrades available via aftermarket. Instrument Cluster: Analog gauges with tachometer, speedometer, fuel, and temperature. Some models feature multi-function displays. Driver Assistance ABS: Anti-lock Braking System (ABS) was an optional or standard feature on higher trims depending on the model year. Connectivity Connectivity Features: Limited by era. No integrated Bluetooth or USB ports. Aftermarket solutions are common. 🔧 Maintenance Service Intervals Oil Change Interval: Typically 3,000-7,500 miles or 3-6 months, depending on driving conditions and oil type (refer to specific owner's manual). Timing Belt Replacement: Crucial maintenance item for EJ-series engines, typically every 60,000 to 90,000 miles or 5-7 years. Failure can cause catastrophic engine damage. Spark Plug Replacement: Varies by plug type (copper, platinum, iridium); generally 30,000-100,000 miles. Fluid Specifications Engine Oil Viscosity: Commonly 5W-30 or 10W-30. Turbocharged models may benefit from synthetic oil. Coolant Type: Subaru Super Coolant (blue) or equivalent silicate-free, long-life coolant. Check owner's manual for exact specification. Transmission Fluid Type Manual: API GL-5 gear oil, typically 75W-90 for RWD or AWD models. Consult manual for specific Subaru part numbers. Transmission Fluid Type Automatic: Subaru ATF-HP or equivalent Dexron-III/Mercon compatible fluid. Capacity approx. 3.5-4 quarts for change. Known Issues Head Gaskets: Certain EJ engine variants (particularly early 2.5L SOHC non-turbo) are known for head gasket failures due to the sealant composition. Turbocharged engines generally have more robust head gaskets. Turbocharger Wear: Turbocharged models can experience turbo wear if oil changes are neglected or if subjected to extreme driving without proper cool-down periods. Clutch Wear: Manual transmission clutches can wear out with aggressive...