BMW 1 Series F20 — Reliability
Reliability Summary
Engine
B37 — 81/100
BUY
Known Issues
6
Engine in this model
Known Issues Across All Engines
| Issue | Engine | Severity |
|---|---|---|
| EGR cooler coolant leak — deposits, intake manifold melt, fire risk (recall) | B37 | critical |
| DPF clogging (short-trip use) | B37 | moderate |
| Turbocharger / variable-geometry and intake fouling | B37 | moderate |
| EGR valve clogging — power dips, limp mode | B37 | moderate |
| Timing chain wear — noisy at high mileage | B37 | minor |
| Vibration and engine-mount wear | B37 | minor |