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Mercedes E-Class E200 NGT CNG Valve Failure — Mercedes-Benz E-Class 2004 | MyCarFault
⚪ UNSOLVED No confirmed fix yet · Be the first to help

Mercedes E-Class E200 NGT CNG Valve Failure

Mercedes-Benz E-Class 2004 M271 NGT CNG
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⚡ Quick Summary
Severity Level
Medium
Safe to Drive?
✅ Safe to Drive
Safety Impact
No direct safety impact reported by owners
Urgency Level
🟡 Monitor Closely

The CNG high-pressure valve on W211 E200 NGT can fail causing the car to switch to petrol only and display a CNG system warning. Valve replacement costs £150-350.

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 E-Class 2004 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.

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