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.
Competitors 1St Gen:
Mitsubishi Lancer Evolution, Ford Escort RS Cosworth, Volkswagen Golf GTI
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.
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
Identification Methods:
Diagrams for component identification, part number cross-referencing
Assembly Disassembly References:
Illustrations showing assembly order and component relationships
Depth:
Detailed part identification and cataloging, essential for accurate part ordering and replacement.
Digital Format:
Searchable PDF with high-resolution diagrams
Print Quality:
High-resolution images and clear text for easy readability
Binding:
Perfect bound or spiral bound for printed versions
Paper Type:
Durable, high-quality paper stock suitable for workshop environments
Engine Codes 1St Gen:
EJ15, EJ16, EJ18, EJ20, EJ22, EJ25 (DOHC, SOHC, Naturally Aspirated, Turbocharged)
Engine Displacement Range:
1.5L to 2.5L
Horsepower Range:
90 hp (1.5L NA) to over 250 hp (EJ207/EJ257 WRX STI)
Torque Range:
100 lb-ft to 270 lb-ft+
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 Types:
5-speed Manual Transmission (RWD or AWD), 4-speed Automatic Transmission (AWD)
Optional Transmissions:
Limited-slip differentials (front and rear) available on performance models, viscous coupling center differential standard on AWD.
AWD System Details:
Symmetrical All-Wheel Drive with variable torque distribution.
NHTSA Ratings General:
Not extensively rated by NHTSA for this era; early models predate more rigorous testing.
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.
Airbags:
Driver and passenger airbags became standard on later models within this range.
Body Structure:
Reinforced body structure for improved crashworthiness.
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.
ABS:
Anti-lock Braking System (ABS) was an optional or standard feature on higher trims depending on the model year.
Connectivity Features:
Limited by era. No integrated Bluetooth or USB ports. Aftermarket solutions are common.
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.
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.
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 driving or high mileage.
Differential Wear:
Rear differentials, particularly on performance models, can wear if fluid maintenance is overlooked.
Example Oil Filter:
Subaru Genuine Part Number 15208AA080 (or equivalent aftermarket)
Example Timing Belt Kit:
Subaru Genuine Part Number 13028AA210 (kit often includes belt, tensioner, idlers)
Subaru Specialization:
Subaru has a long history of producing reliable, capable vehicles with a focus on AWD and Boxer engines, originating from aircraft manufacturing.
First Generation Launch:
The first generation (GC/GF/GM) debuted in 1992 in Japan and 1993 in North America, quickly gaining a reputation for its handling and rally-bred performance.
Performance Development:
The WRX (World Rally eXperimental) variant was introduced to homologate for the World Rally Championship, leading to the legendary WRX STI.
Manufacturing Locations:
Primarily manufactured in Japan (Gunma Prefecture).
Sales Impact:
Established Subaru as a serious contender in the performance compact segment and boosted brand image globally.
