Hello, I am about to buy a used car from a dealer. In the advertisement on mobile.de the car is accident-free. Only ask if something was done on the car, the seller told me that the front bumper was replaced, but no further repairs, or maintenance measures. Suppose I buy the car and in the purchase contract there is no cross in case of accident-free, but in addition I have to certify that with the car only bumpers I will write down exactly all the defects and keep them in the contract, even that no supporting or safety-relevant part has been exchanged or repaired. After the car purchase I go to the DEKRA and they find that, for example, something has been done at the frame or something that does not stand as defects in the purchase contract. Do I then have a right to withdraw from the purchase contract?