2017 Subaru WRX STI
2017 Subaru WRX STI
Overview
The 2017 Subaru WRX STI is a performance-oriented sedan known for its potent turbocharged engine and all-wheel-drive system. While generally robust, like any performance vehicle, it can experience specific issues related to its high-strung nature. This analysis focuses on documented technical reliability concerns beyond routine maintenance, providing insights into potential problem areas for owners and enthusiasts. The data aims to offer a clear picture of the vehicle’s reliability profile, highlighting common component failures and their associated costs.
Engine
2.5L Turbocharged Boxer (EJ257)
Piston Ring Land Failure
- Symptoms: Engine knocking, loss of power, increased oil consumption, potential engine seizure.
- Solution: Engine rebuild or replacement with forged pistons.
- Cost: $3,000 - $7,000+
Head Gasket Failure
- Symptoms: Coolant loss, white smoke from exhaust, engine overheating, milky oil.
- Solution: Replacement of head gaskets and potentially resurfacing of cylinder heads.
- Cost: $1,500 - $3,000
Turbocharger Failure
- Symptoms: Loss of boost, whistling noises, smoke from exhaust, reduced engine performance.
- Solution: Turbocharger replacement.
- Cost: $1,000 - $2,500
Transmission
6-Speed Manual (TY85)
Clutch Wear
- Symptoms: Slipping clutch, difficulty shifting gears, burning smell.
- Solution: Clutch replacement (kit includes pressure plate, clutch disc, and release bearing).
- Cost: $800 - $1,500
Synchro Wear
- Symptoms: Grinding noise when shifting into certain gears, difficulty engaging gears.
- Solution: Transmission rebuild with replacement of worn synchronizers.
- Cost: $2,000 - $4,000
Suspension
Performance Suspension
Worn Struts/Shocks
- Symptoms: Bouncy ride, poor handling, excessive body roll, visible leaks.
- Solution: Replacement of struts and/or shocks.
- Cost: $600 - $1,200
Electrical
Standard Electrical System
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: N/A
Exterior
Body and Trim
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: N/A
Interior
Cabin Components
No Major Issues
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: N/A
Summary Verdict
The 2017 Subaru WRX STI, while a capable performance car, exhibits some common issues associated with its high-output engine and performance-oriented drivetrain. The 2.5L turbocharged engine is prone to issues like piston ring land failure and head gasket problems, especially if not maintained meticulously or if subjected to aggressive driving. The manual transmission, while generally durable, can experience clutch wear and synchro issues over time. Suspension components like struts and shocks are also subject to wear. Electrical, exterior, and interior components are generally reliable with no widespread reported problems. Owners should be aware of these potential issues and prioritize regular maintenance and careful driving to mitigate risks.