BMW 328i E90 — Reliability

E90 Sedan Mid 2005–2011 1 engine

Reliability Summary

Engine N52 — 90/100 BEST
Known Issues 3

Engine in this model

BEST 90

N52

2.5-3.0L NA I6

Last great NA six. Lighter (magnesium block), smoother, higher-revving than M54. 250k+ km.

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Known Issues Across All Engines

Issue Engine Severity Onset
Coolant expansion tank / hose failure N52 moderate 80,000 km – 150,000 km
VANOS solenoid / oil feed failure N52 moderate 80,000 km – 160,000 km
Hydraulic lifter tick on cold start N52 minor 60,000 km – ∞