I have a similar problem but the garage has gone into liquidation. The cam belt went in the first 2 months and it had been replaced only 3000 miles prior to purchase. An independent report which i had done states it was due to the cam belt not being correctly fitted during that repair. Under the Sale of Goods Act I have written to American Express (credit card -not charge card) claiming the repair costs but they say that as the car was second hand they are not paying. I think I should go down the small claims route - what are your opinions.