Specifically, got a 2014 Jetta Sportwagen. Had some water issues with water building up in the moonroof area and flooding down into the headliner.
I read that the sportwagen’s in particular are pretty notorious for this issue.
Is it just a matter of running something down the drain tube and trying to push a blockage through?
I really don’t see the need for sunroofs, but so many cars have them. I rarely open mine because I prefer silence, and if they ever need maintenance (they will) it’s a nightmare.