1. Take the money! Essentially, this is because whilst a car dealer must inform you that the vehicle is roadworthy & fit for purpose, there is no condition laid down by law which requires the car dealer to fully disclose that the vehicle was in an accident previously. Provided the car was roadworthy, then that is the extent of the car dealer's obligations. So if the car dealer will offer you money, you should take it as in law, it is questionable that the car dealer has a liability to you for the €800. In your question, you do not mention whether the car was roadworthy or not and fit for purpose. However, if it was, then you should simply take the money on offer.