Cold draught problem

I bought a brand new Mini Cooper S last year that has a serious flaw.
http://www.dontbuyamini.co.uk/ (http://www.dontbuyamini.co.uk/)
It’s been back to the dealer on several occasions and they have attempted to cure the problem without success.
They now tell me that the problem is ‘common to this model’.
Has anybody else had the same problem?