Second time this month mine has done it. First time, they had it 2 hours and said it was "loose gas cap".--- riiight, it's idiot proof and I'm sure it was on right. It came on a week later and I know damn well it isnt a loose cap. We'll see in the morning when I drop it off again. Had to wait a week for an apt with a loaner available.
2006 330i Titanium Silver