I know I have a 5 series (530d GT) and this is a 3-series forum but I had to post my experience. Brand new car, sitting on driveway, alarm goes off and we find the sunroof has exploded outwards like a Volcano. Nothing inside car to show impact, nothing outside to show something bounced off it. No trees or similar near car. Bad luck, maybe.
But the dealer quoted £800 to replace the glass, and then later in the week another member of staff (who did not know we had a quote already) quoted £4,200. I queried this and he tells us that they need to replace the whole mechanism. Sounds like a design flaw to me!
And surely we should have been told that the sunroof option included a risk that we would have to pay 10% of the value of the car if it broke.
Is this a BMW wide issue, or just my dealer!