Is this problem only occurring on the TCR, or all Mk 7's?
It’s not just the TCR. I can remember reading of the issue @Watts has on another forum where members are predominantly in USA / Canada and they don’t get the TCR. It was also some time ago - probably before the mk7.5 was launched.
Unlike the UK, the North American Golf GTi’s come in either three or four different trim levels - they aren’t able to personalise their GTI’s and pick specific options. Therefore, the top one or two trim levels for the GTI all get a sunroof, so quite a few owners have sunroofs.
Issues that have been reported over the life of the mk7/mk7.5 Golf by owners of North American Golf GTI’s with a sunroof are;
- creaks and rattles
- loose fitting interior shade blind, which slides back under acceleration and slides forward under braking
- water ingress into the car as a result of drain tubes becoming blocked
- stress cracks in the panel that @Watts has with his sunroof
- a couple of instances of ‘exploding’ sunroofs - probably caused by stone impact damage as a result of projectile stones being flicked up at speed by other vehicles and hitting the glass sunroof panel (suggests the sunroof panel is toughened rather than laminated glass)
From memory there’ve been quite a few mentions of the first two in the list. The last three; not so many mentions, so if membership on that forum is representative of the total USA/Canada GTI ownership, then the last three are probably not common issues.