I think your dealer is wrong. Check the parts numbers, they should be the same for 3 or 5 doors. From the rear seat backwards the cars are identical, how are they different? Check this. Are all parcel shelf's for the mk5 golf the same?Mine is a three-door. My local dealer told me that the three-door and five-door cargo covers are different. If that were not the case, I would have snatched-up that Golf cover immediately. I appreciate the effort.
Glad to be of help.Thank you to everyone. The 2010 parcel cover fit perfectly. You guys are a great resource.