I bought the reversible liner (fabric on one side, nibbed rubber on the other, with a piece of fabric which folds out to cover and protect the rear load lip) on Saturday. £85 list price but dealer gave me 10% off since I bought the GTI from them
The liner is full size for when you have the seats down i.e. stretches fully back to the front seats, so when you don't have them down it has to be folded in two - there is a crease point on the rubber side to help it fold. It is a bit of a tight fit getting it into the boot with the seats up and getting it settled correctly but it does appear to be correctly sized. I did have the luggage floor at the bottom position to accommodate the dog and the liner didn't sit well in that position but it was OK. The dog didn't get as wet and dirty as I expected so I could have managed without it, but nice to have the reassurance I guess.
The only thing I didn't like was that my fingers were very itchy after fitting it as if it had lots of loose tiny sharp fibres from the manufacturing process (think of the sort of itch you get from glass fibre loft insulation). The dog had a bed to lie in so she didn't seem to have itchy paws though, but that could be an issue.
