Put in writing to the dealer, and copy to BMW Customer Services, and copy to local Trading Standards Office that you are unhappy with the reliability of the roof and that it has been into the dealer to be 'fixed' without success ie: document what has happened. Include a photo of the roof in the 'broken' position - and insist that they replace the car - then give them a deadline by which to reply - 10 days should be enough time.
In view of the roof failure at hand-over and the inconvenience caused to you (plus the worry when lowering the roof, and wondering if it will ever close again when the next rain cloud appears), I would expect you will get a prompt reply from the dealer.
Good luck and let us all know how you get on.
In view of the roof failure at hand-over and the inconvenience caused to you (plus the worry when lowering the roof, and wondering if it will ever close again when the next rain cloud appears), I would expect you will get a prompt reply from the dealer.
Good luck and let us all know how you get on.