Mercedes W222 S350 S400 CDI Timing Chain High Mileage
Mercedes-Benz
S-Class
2013
OM642 3.0 CDI V6
⚡ Quick Summary
Severity Level
Medium
Safe to Drive?
⚠️ Drive with Caution
Safety Impact
Indirect risk — worth monitoring, not urgent
Urgency Level
🟡 Monitor Closely
The OM642 V6 diesel in W222 S350/S400 can develop chain stretch above 200,000 km. Cold start rattle is the warning. V6 chain replacement costs £1,500-3,000.
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 Mercedes-Benz S-Class 2013 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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