Hello municipality. Supposedly, I buy an Audi S4 and find out the next day that 2 lambda probes are defective. The car has a gas system The seller told me in advance that the exhaust light (motor symbol) in the instrument cluster has to be dealt with from time to time because of the gas system and the error has to be deleted. In addition, I made sure that a tire is defective and leaves light air. I have already seen this in the purchase and had to pay 200 euro less on it. gen: 1. a tire now costs unfortunately 400 euro and loud händel I need both new (because of all wheel). one has 6,5mm and the other has then new 8mm. therefore both have to cost new to 8mm. 800 euro!!! 2. 2 Lambda are defective and have to be exchanged. the other errors are really through the gas system, says the workshop. cost also again 600 euro with installation. Private sale with property defects liability is excluded in the contract. Can I demand something back? in the repair history he says that the Lambda errors have occurred more often and that the previous owner did not want any repair. (he says the workshop said that ALL Fehler came from the LPg nlage)