Depends on whether you get an @r$e of an inspector or not from BCA. When I returned my Leon, it had quite a few stone chips, and dings here and there, and some scratches that I stupidly used the 'scouring' side of the sponge to remove bird poo, and me using touch up paint incorrectly and made it look more obvious that it was touched up, the inspector that day, looked at it, was impressed, and commented if everyone kept the car in this condition his job would be so easy, gave it an A grade, and that was that.
The inspector of the
Ibiza however...oh my days...he marked me down for dents that don't exist, when I said I can't see it, he commented 'that's why he's the inspector and I'm not, and that BCA went for a big redundancy and only the best were kept' he was measuring the panel thickness everywhere with a device, pressing down quite hard on the panel at some points... Bear in mind, this car had NO stone chips, No wheel scuffs (despite black alloys), even my dual exhaust were polished and shiny. I think he was trying to find something to mark me down, on, and boy did he try. He insisted both panels had a dent, that I couldn't see, and charged me £36 per panel...one on each side. He used a mirror and straight line card to prove his point....took pictures with a tablet. Till today, I still believed he put the dents there himself when he pressed hard on panels. When I asked if I could challenge his decision, he said sure, but if you do that, they would also have to inspect the underside of the car etc...and that may incurred additional costs etc...so I left it. Cool downed, returned with my dSLR camera and took pictures. They did take my £36 per panel out of my account, but I challenged it with Seat/BCA, after looking through once more the fair wear and tear policy. Who after looking at he pictures he submitted, said, they couldn't see anything, apologised and refunded me. The person who collected the car, said the car was in immaculate condition, well done, and signed it off with an A. Go figure...
And don't worry if by the time you return it, you are out of insurance, which I was...they will bring trade plates, but do tell them in advance.