Hello, had bought a car private last week, 5300 euros. On the way home lights oil lamp and motor lamp. Vehicle turned off , again turned everything back on normal. But the engine also made funny noises at home and the oil lamp came back. Seller wrote, then of course the usual, knows of nothing. Excluding the liability for defects etc. is in it. At the Dursicht of the documents we suddenly saw that we happened to take both purchase contracts with us. U. What are our chances?