thank you Gregers, at the moment the car is back at the garage, i bought it a week last saturday and returned it saturday just gone, it has three months warranty, however, the garage rang to say that they had tried the car and it was fine, yes this does happen occassionally and it is fine on level ground, but has a problem when on a hill, i would like to feel a bit more confident and wondered where they would have to check for a proper diognosis, would you know a question I could ask them to make sure they have checked. thank you