Mercedes E-Class Head Gasket Symptoms — OM651 Diesel
Mercedes-Benz
E-Class
2009
OM651 2.2 CDI
Safe to Drive?
🚫 Do NOT Drive
Urgency Level
🟠 Fix Soon
Head gasket failure on W212 E220d is uncommon but happens at very high mileage (250,000+ km). Symptoms include white smoke with coolant smell, rising coolant consumption without visible leak and overheating. More common cause of coolant loss on OM651 is EGR cooler crack — always test EGR cooler first.
Repair / Solution
No confirmed fixes yet. Share yours below.
Help other owners by sharing your experience.
Your real-world fix helps thousands of drivers worldwide. Takes 2 minutes.