325d / 330d 3.0d (M57)
2005–2011 · diesel · 2993cc · 231hp
Engine codes: M57
Reliability, common problems and owner reviews for the Bmw 3 Series E90 325d / 330d 3.0d (M57). Check this before you buy used.
The straight-six diesel — strong, smooth and far more dependable than the N47 four-cylinder. Holds value better and sounds nicer. Watch the usual diesel wear items (swirl flaps, EGR, DPF, turbo) but the core engine is tough. The diesel to buy in an E90.
Same engine, other cars
This is the same physical engine (M57) sold under different names across brands. Reliability is broadly shared — cross-check these:
Known Issues
Intake swirl flaps can break and be ingested.
Fix / Workaround: Swirl-flap delete / blanking plates.
Repair cost: €150–€500
DPF blocks on short trips; EGR clogs.
Fix / Workaround: Motorway runs; clean/replace.
Repair cost: €200–€1200
Mileage Thresholds
After 300,000 km: Robust six commonly reaches very high mileage.
Pre-Purchase Checklist
- ☐Swirl flap delete done?
- ☐DPF/EGR history; prefer motorway-used
- ☐The diesel to choose over the N47
Frequently asked questions
Is the Bmw 3 Series E90 325d / 330d 3.0d (M57) reliable?
Reliable — The straight-six diesel — strong, smooth and far more dependable than the N47 four-cylinder. Holds value better and sounds nicer. Watch the usual diesel wear items (swirl flaps, EGR, DPF, turbo) but the core engine is tough. The diesel to buy in an E90.
What are the common problems and reviews for the Bmw 3 Series E90 325d / 330d 3.0d (M57)?
The most commonly reported problems: Swirl flap failure, DPF / EGR clogging.
Is a used Bmw 3 Series E90 325d / 330d 3.0d (M57) worth buying?
Minor issues only, easy to maintain, no design flaws. A safe used buy.