One of the riskiest used diesel purchases (Risk Score 9.0/10). The crankshaft failure in early models is catastrophic and frequent. Later Euro 6 models are improved, but parts availability and mechanic knowledge are poor compared to standard inline-4 diesels.
Subaru Subaru 2.0 Diesel (EE20)
Subaru 2.0 Diesel (EE20) Engine
Unique as the world's only passenger car Boxer Diesel. It offers a low center of gravity and smooth operation. However, it is an engineering experiment that didn't age well.
This overview summarizes the reliability of the Subaru Subaru 2.0 Diesel (EE20), including common issues and cost drivers.
Technical Specifications
Manufacturer
Subaru
Fuel Type
Diesel
Displacement
2.0 L
Production
2008–2018
Power Output
147–150 hp
Emissions
Euro 4, Euro 5, Euro 6
Reliability Analysis
Avoid
Autoscore Verdict
Avoid. The risk of total engine failure is too high. Buy a petrol Subaru or a diesel from another brand.
Risk Score
9
out of 10
Common Problems & Weak Points
| Issue | Typical Mileage | Repair Cost (Est.) | Severity |
|---|---|---|---|
| Crankshaft Failure | ~100,000 km | €3000 – €6000 | High |
| DPF Blockage | ~60,000 km | €800 – €1500 | Medium |
Crankshaft Failure
The world's first Boxer Diesel had teething troubles. Early blocks (Euro 4) were prone to flexing, causing the crankshaft to snap in half, destroying the engine. Euro 5 models (2010+) are better but still risky. Clutch and flywheel lifespan is also very short.
Typical Mileage: 100,000 km
Cost: €3000–6000
DPF Blockage
Subaru's DPF system is notoriously sensitive. City driving clogs it rapidly, leading to oil dilution (diesel in oil pan) which can then exacerbate the bottom-end bearing issues.
Typical Mileage: 60,000 km
Cost: €800–1500
Buyer's Inspection Checklist
- Strictly Avoid 2008-2010 models (Euro 4).
- Check for clutch slip (dual mass flywheel is weak).
- Monitor oil levels for rise (dilution).
- Listen for deep knocking sounds.
Frequently Asked Questions
Is the Subaru 2.0 Diesel (EE20) engine reliable?
The Subaru 2.0 Diesel (EE20) has known weak points, but with good maintenance the reliability is solid. See the risk analysis and common problems for specifics. Start a report for a specific car.
How expensive are typical repairs?
Common repairs fall into a mid-range cost band depending on the issue and workshop. Check the cost ranges in the table. Use the used car report for specific listings.
Which model years are best for this engine?
Newer production years often include technical updates. Review the production years and revisions in the specs. Use Car Check for quick screening.
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