Well I had to take my car ('07 Camry SE V6) in to get a paint job on the back 1/4 panel ....I was washing it last week and noticed a stain about 1" in diameter below the gas tank lid

, and try as I might could not remove it...turns out the stain was under the clearcoat. Took it back to the dealer and they managed to pop the clearcoat and remove the stain but now had to paint the entire panel over...warranty work took 1/2 day to do...looks great

but when I first discovered it my heart sank a little thinking 'what the f***' Can't even notice it now...my advice is to really go over your new car when you pick it up....
cheers