My 09 TDi came with a sagging headliner...actually held up by a couple 100 pins...and a roll of fabric. The fabric is cheap and the dealer had a quote of $300 to install it but his guy was busy so I took it as is (got a $500 discount off my purchase price) and my guy did it for $225. You can diy this but it's a pita to re & re, a number of brittle plastic bits that can/will break and scraping the old foam off the headliner alone is reason enough to farm this job out.