I noticed in my 13 Jetta when going through the car wash I would get some water splatter. I can re create this with a garden hose pressurized as well. Only happens with the sunroof cover open. When watching it the water comes into the channel with enough force that it then splatters out of the sunroof drain tray and into the car. The drain are all clear and everything visually looks good. The sunroof seal look good i did use a rubber seal conditioner on it to see if that would help. When Googling this you get answers from that's totally normal to the entire car is junk and to scrap it. I've only owned a couple of cars with a sunroof so I don't have a lot of experience with them. What do you guys think?