BMW X3 G01 M40i B58 Valve Cover Gasket Leak
BMW
X3
2017
B58 3.0 Turbo
⚡ 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 valve cover gasket on B58 engine in X3 M40i leaks oil onto surrounding components. An oily residue on the back of the engine and burning smell confirm the fault. Replacement costs £200-400.
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 X3 2017 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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