Quote:
Originally Posted by Dangriffin87
Just been out for a spirited drive.
Friend commented that there was some white smoke coming out of my exhaust.
Later on I was stopped in traffic at the lights and I saw the smoke coming out along with a burnt plastic smell.
Drove car home and didn't see smoke again, parked up and let car idle. No smoke or smell.
No noticeable power loss and car feels normal to drive. Car is 2015 M3 got 77k kms on it.
Any thoughts or ideas where I should start troubleshooting?
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Agree that something may be getting inside the exhaust and also the gasoline can be of lower quality. In any instance I would not guess or make forecasts. I think you need to show this to certified mechanics at the station.