BMW 420d 430d F32 N47 B47 Timing Chain
BMW
3 Series
2013
N47/B47 2.0d
⚡ Quick Summary
Severity Level
High
Safe to Drive?
⚠️ Drive with Caution
Safety Impact
Can become a safety issue if left unresolved
Urgency Level
🟠 Fix Soon
The N47/B47 diesel in F32 4 Series 420d/430d has the same timing chain considerations as F30 3 Series. Cold start rattle indicates chain wear. N47 rear-mounted chain costs £1,800-3,000 on coupe. B47 front-mounted chain costs £800-1,400.
Repair / Solution
No confirmed fixes yet. Share yours below.
⚠️ Wrong Diagnosis?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this BMW 3 Series 2013 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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