If they've used "your" car for a demo, that is B.S.
I would not be happy. Before you've bought it, yes, that's OK, but after it's yours, No Way.
I'd reckon maximum no of ks should be no more than 30/40, but just on factory test/shipping/ moving around Dealer, pre delivery etc. I understand that "New" cars are demo'd with trade plates on 'em etc, but IMHO if a car is sold, then it should be "put out the back", until the new owner picks it up.
Cheers, Pickles.

