Seeking advice on a used 2020 Superb that I recently purchased. It was from a National dealer chain, but not part of the Approved Used Skoda network. When I got the car home I found the passenger and rear seat behind it were wet underneath the carpet. The insulation material was saturated with water. I took videos showing it was squelching. The dealer came and collected the car and I expected them to find the source of the leak and fix it. I asked that the insulation was replaced and all electrical connections checked. Dealer has come back after a few days to say that it was checked with a smoke machine and no leak was found. Their suggestion is the water came from a valet or open window. To me this sounds absurd and informed them that I wish to reject the car and receive a full refund. I am waiting for a reply but their last communication sounds like they are starting to contest it, even though they previously said they would understand if I wanted to reject it. I lose money (tax, insurance) and it is a lot of hassle to reject it, but am I right? Should I consider that the water could have come from a somewhere other than a leak? Many thanks