My father has owned a 1991 Audi 90E, since new and unfortunately is no longer able to drive. He has asked me to dispose of the vehicle for him but I have been unable to establish what the vehicle is worth. There seem to be very few for sale. The mileage is 89,000 and the vehicle has been garaged since new, with an MOT until Dec24. I have approached a couple of motor traders but they have not been interested. Any advice on this would be greatly appreciated. I was trying to avoid selling on ebay.