2.0 CRDi (D4EA)
2004–2010 · diesel · 1991cc · 140hp
Engine codes: D4EA
Reliability, common problems and owner reviews for the Hyundai Tucson 2.0 CRDi (D4EA). Check this before you buy used.
The 2.0 CRDi — torquey and economical, but the first-gen Tucson diesel is known for early compression loss (worn rings, bore scoring, valve leaks), turbos that cut out leaving very low performance, NOx-sensor failures putting the car in limp mode, and high oil consumption that can wreck the engine if oil isn't watched. Only sensible with full history, oil monitoring and motorway use; the 2.0 petrol is the safer buy.
Known Issues
Early compression loss from worn piston rings, cylinder-wall scoring or valve leaks.
Fix / Workaround: Compression test before buying; monitor oil consumption.
Repair cost: €800–€3000
Typically appears after: 150,000 km
Turbo eventually cuts out → very low performance (acts like no boost).
Fix / Workaround: Check turbo/boost on test drive; rebuild/replace.
Repair cost: €400–€1200
Typically appears after: 130,000 km
Failed NOx sensor → limp mode; high oil consumption risks engine failure if unchecked.
Fix / Workaround: Replace NOx sensor; check oil obsessively.
Repair cost: €200–€800
Mileage Thresholds
After 150,000 km: Compression/turbo/oil issues cluster.
Pre-Purchase Checklist
- ☐Compression test (rings/bore)
- ☐Check turbo/boost on test drive
- ☐Check oil consumption + NOx/limp faults
- ☐Prefer the 2.0 petrol
Frequently asked questions
Is the Hyundai Tucson 2.0 CRDi (D4EA) reliable?
Problematic — The 2.0 CRDi — torquey and economical, but the first-gen Tucson diesel is known for early compression loss (worn rings, bore scoring, valve leaks), turbos that cut out leaving very low performance, NOx-sensor failures putting the car in limp mode, and high oil consumption that can wreck the engine if oil isn't watched. Only sensible with full history, oil monitoring and motorway use; the 2.0 petrol is the safer buy.
What are the common problems and reviews for the Hyundai Tucson 2.0 CRDi (D4EA)?
The most commonly reported problems: Compression loss (rings / bore scoring), Turbo cut-out, NOx sensor failure / oil consumption.
Is a used Hyundai Tucson 2.0 CRDi (D4EA) worth buying?
Known design issues and recurring faults that were never fully resolved. Buy only with eyes open.