EJ20 Turbo
Subaru · 2.0L Turbo Boxer I4
1994–2020
"WRX/STI legend. Unequal-length headers = boxer rumble. Head gasket concerns. Maintenance-intensive but rewarding."
Mileage Risk Timeline
When problems typically appear — enter your mileage to see your risk zone
Known Issues 2
Ringland failure under heavy modification
▸Loss of compression, blue smoke, blow-by
Semi-open deck means ringland cracks when heavily boosted. Stock use: much safer. >300hp: ringland risk.
Stock or mild use in Greece: manageable. Heavy tuning: serious risk.
Rod bearing wear (oil quality critical)
▸Knock under load, oil analysis showing bearing metals
Oil quality and frequent changes critical. Flat-four oil delivery can starve bearings on hard use.
WRX/STI owners in Greece: oil every 5k km MAX. Oil analysis recommended.
Models with EJ20 Turbo 1
Other Subaru Engines
Tuning Potential
400hp+ Stage 2
Frequently Asked Questions
Is the Subaru EJ20 Turbo reliable?
The Subaru EJ20 Turbo scores 62/100 with a verdict of CAUTION. It has 2 documented issues with total repair costs between €3,200 and €9,000.
What are the common problems with the EJ20 Turbo?
The most common issues are:
- Ringland failure under heavy modification — high, repair cost €2,000–€6,000, 60,000 km–120,000 km
- Rod bearing wear (oil quality critical) — high, repair cost €1,200–€3,000, 80,000 km–150,000 km
What cars use the Subaru EJ20 Turbo?
The EJ20 Turbo is found in:
- WRX STI 2.5T (2014–2021)
How much does it cost to repair the EJ20 Turbo?
Total potential repair costs for all 2 known issues range from €3,200 to €9,000. The most expensive issue is typically .
What years was the EJ20 Turbo produced?
The Subaru EJ20 Turbo was produced from 1994 to 2020. It is a 1994cc H4 petrol turbo engine.
Verdict and scores are editorial opinions based on aggregated data. Learn about our methodology. Not a substitute for professional inspection.