Audi A4 2.0 TFSI White Smoke On Cold Start — PCV
Audi
A4
2005
2.0 TFSI BWE
Safe to Drive?
🚫 Do NOT Drive
Urgency Level
🟡 Monitor Closely
White or bluish smoke from A4 2.0 TFSI on cold startup that clears after warm-up indicates PCV (crankcase ventilation) oil separator failure. Oil mist enters the intake in large quantities. PCV separator replacement costs £80-200 and should be the first repair before suspecting valve seals.
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