Occasionally, I will get a smell in the cabin that I have never experienced prior to owning this vehicle (It's pretty nasty). I'm thinking it's the turbo's dumping excess pressure, but on the other hand, wouldn't any dumping be done on the fresh air side, so why would it smell at all?
The first time I noticed this odor was after backing down from a hard launch at the point when it shifted to third gear. That happened a couple of times, but now, that same smell occurs even when under normal driving. Took it to the dealer, but because it happens only once or twice a month with no codes, they could not help me.
Any ideas...