The E81/E82/E87/E88 1-Series with N43/N46 fours, the N52 six (130i), the twin-turbo N54 and later N55 (135i), and M47/N47 diesels — the smallest RWD BMW hatch/coupé of its era. Editorial summary, not a reliability rating; per-configuration facts below.
▾
Filtered: N47 · 2.0L diesel (N47).
Known issues
Sorted by severity. Tap an issue to reveal its symptom, repair and what to check.
HighEGR cooler leaks / clogging (N47)EU market
HighTurbocharger wear (N47)EU market
MediumDPF clogging on short trips (N47)EU market
MediumInjector wear (N47)EU market
MediumIntake swirl-flap wear (N47)EU market
Engines & reliability
Tap a row to filter the issues to that engine.
Pre-purchase checklist
Cold start
☐Listen for chain rattle during a fully cold start
Diagnostics
☐Scan for low-rail-pressure DTCs before the test drive
Maintenance
Key service intervals — vary by engine and driving conditions.