2002 Subaru Impreza
2002 Subaru Impreza
Overview
The 2002 Subaru Impreza, particularly in its WRX and STI variants, is renowned for its performance and rally-inspired capabilities. While generally considered a robust vehicle, certain model years and specific configurations can exhibit characteristic issues. This analysis focuses on common mechanical and electrical concerns reported by owners and technicians, excluding routine maintenance. Understanding these potential pitfalls can help owners budget for repairs and ensure the longevity of their Impreza, especially for those seeking to maintain or restore these enthusiast-focused vehicles. The data presented aims to provide a clear picture of reliability for the various engine and transmission options available.
Engine
2.0L Turbocharged EJ205 (WRX)
Head Gasket Failure
- Symptoms: Coolant loss, white smoke from exhaust, engine overheating, milky oil.
- Solution: Replacement of head gaskets, often with upgraded multi-layer steel gaskets.
- Cost: $1200 - $2500
Turbocharger Failure
- Symptoms: Loss of power, blue smoke from exhaust, whining noises, boost leaks.
- Solution: Rebuild or replacement of the turbocharger.
- Cost: $800 - $2000
Piston Ring Land Failure
- Symptoms: Excessive oil consumption, blue smoke, loss of compression, detonation.
- Solution: Engine rebuild with forged pistons.
- Cost: $3000 - $6000+
2.5L Turbocharged EJ255/EJ257 (STI)
Head Gasket Failure
- Symptoms: Coolant loss, white smoke from exhaust, engine overheating, milky oil.
- Solution: Replacement of head gaskets, often with upgraded multi-layer steel gaskets.
- Cost: $1200 - $2500
Piston Ring Land Failure
- Symptoms: Excessive oil consumption, blue smoke, loss of compression, detonation.
- Solution: Engine rebuild with forged pistons.
- Cost: $3000 - $6000+
Cracked Cylinder Sleeves
- Symptoms: Loss of compression, engine misfires, rough running.
- Solution: Engine rebuild with reinforced sleeves or replacement.
- Cost: $4000 - $7000+
2.5L Naturally Aspirated EJ251/EJ253 (Non-Turbo)
Head Gasket Failure
- Symptoms: Coolant loss, white smoke from exhaust, engine overheating, milky oil.
- Solution: Replacement of head gaskets.
- Cost: $1000 - $2000
Transmission
5-Speed Manual (Non-STI)
Clutch Wear
- Symptoms: Slipping clutch, difficulty shifting, grinding noises.
- Solution: Clutch kit replacement (clutch disc, pressure plate, release bearing).
- Cost: $600 - $1200
Synchronizer Wear
- Symptoms: Grinding when shifting into certain gears, difficulty engaging gears.
- Solution: Transmission rebuild or replacement.
- Cost: $1500 - $3000
6-Speed Manual (STI)
Clutch Wear
- Symptoms: Slipping clutch, difficulty shifting, grinding noises.
- Solution: Clutch kit replacement (clutch disc, pressure plate, release bearing).
- Cost: $700 - $1400
Gearbox Bearing Failure
- Symptoms: Whining noises, rough shifting, potential for gear disengagement.
- Solution: Transmission rebuild with bearing replacement.
- Cost: $1800 - $3500
4-Speed Automatic
Torque Converter Issues
- Symptoms: Shuddering, slipping, delayed engagement, overheating.
- Solution: Torque converter replacement or transmission overhaul.
- Cost: $1000 - $2500
Transmission Fluid Leaks
- Symptoms: Leaking fluid, shifting problems, potential for transmission damage.
- Solution: Seal and gasket replacement.
- Cost: $300 - $700
Suspension
Standard Chassis
Worn Ball Joints and Tie Rod Ends
- Symptoms: Clunking noises over bumps, vague steering, uneven tire wear.
- Solution: Replacement of worn components.
- Cost: $300 - $600
Rear Wheel Bearing Failure
- Symptoms: Humming or grinding noise from the rear, especially when turning.
- Solution: Replacement of the wheel bearing assembly.
- Cost: $250 - $500
Performance Suspension (STI)
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Electrical
Standard System
Alternator Failure
- Symptoms: Dimming lights, battery warning light, starting issues.
- Solution: Replacement of the alternator.
- Cost: $400 - $700
Window Regulator Failure
- Symptoms: Power windows not operating, slow or jerky window movement.
- Solution: Replacement of the window regulator mechanism.
- Cost: $200 - $400
Exterior
Body Panels and Trim
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Paint and Clear Coat
Clear Coat Peeling
- Symptoms: Peeling or delaminating clear coat, especially on the roof and hood.
- Solution: Repainting of affected panels.
- Cost: $500 - $1500 per panel
Interior
Upholstery and Trim
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
HVAC System
Blend Door Actuator Failure
- Symptoms: Inability to control temperature or direct airflow.
- Solution: Replacement of the blend door actuator.
- Cost: $200 - $400
Summary Verdict
The 2002 Subaru Impreza, particularly the turbocharged WRX and STI models, offers an engaging driving experience but comes with potential reliability concerns, primarily related to its performance-oriented engines. Head gasket failures and issues with piston ring lands are common, especially if the vehicle has been driven hard or not maintained meticulously. The manual transmissions are generally robust, though clutch wear is expected. Automatic transmissions can be less reliable. Suspension components like ball joints and wheel bearings may require attention over time. Electrical issues are less prevalent but can include alternator and window regulator failures. The exterior paint can suffer from clear coat degradation. Overall, while not without its quirks, the 2002 Impreza can be a reliable car with proper maintenance and awareness of its common weak points, especially for enthusiasts who understand the demands of turbocharged performance.