BMW 320i G20 B48 Timing Chain Cold Start Tick Normal
BMW
3 Series
2019
B48 2.0 Turbo
⚡ Quick Summary
Severity Level
Low
Safe to Drive?
✅ Safe to Drive
Safety Impact
No direct safety impact reported by owners
Urgency Level
🟢 Low Priority
A brief tick from the B48 engine at cold startup lasting under 5 seconds is normal hydraulic tappet behaviour. Persistent tick beyond 30 seconds at idle indicates timing chain tensioner wear. Updated tensioner from BMW. Cost: £500-900.
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 2019 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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