Drain holes !

[O.C.D.]

Mk3 fabia ..the tail gate door has 3 drain holes but they have 3 rubber Grommets that I thought had holes in them but on closer inspection they are a closed grommet ...so in fact the drain holes are blocked by these grommets ...whats the point in that ??

[matthall94]

Well I could be totally wrong but I believe the idea is the weight of the water forces itself out of the holes but the grommet stops dirt getting inside and blocking the hole if that makes sense. 

[O.C.D.]

There's no way water would force the grommet out ...it was hard enough getting one out for the photos. 

[JGrindel]

The tailgate is a sealed unit. So no water should be getting in there to drain out unless your washer hose fails which I doubt or the rubber hoses at the top that contain the wiring pop off which I can tell you is a right paint to remove / unclip in the first place. 

 

If you removed those grommets and have the boot shut the water that sprays onto the flat part of the rear bumper / where the boot closes too will then allow water into the boot and overtime, could end up with rust.