I bought a car at the advertised price with no inspection. On the way home I realised that though the mot was valid it wasn't legal to drive. I asked a garage to in investigste. I thought wear n tear, so be it. After over a month of work they confirmed that the relevant part had been smashed and disconnected and the seller must have known about it. Ebay now say they are not interested as I did not raise a concern with them within 30 days of the purchase. What have I done wrong.