Hello, I bought a used car from a renowned car dealer (binding order and order confirmation is available). When ordering, the retrofitting of an additional equipment was agreed. The car is still available at the dealer and is prepared for delivery. An appointment has already been agreed. The dealer has now informed me that the retrofitting of the additional equipment is not possible, since no manufacturer approval for the combination of the existing Z He could not offer me an alternative. At the conclusion of the contract he was not aware of this (despite consultation with the car master of his workshop) because it was overlooked. What rights do I have as a private person to the dealer? He has to issue me offers for the retrofitting costs for the additional equipment or to withdraw from the purchase. Can I demand a contract fulfilment (other comparable used vehicle with the desired This argument would make the dealer a much lower purchase price for the purchased vehicle “flavorable”. Or would the dealer come out of this situation without harm?