My Mk8 GTI had serious software faults with sensors and my whole dash blacked out while driving and i thought thats enough, rejecting it and VW took it off me, then i bought the clubsport and i had very minor software issues but 2 updates since and it seems to have sorted it i hope.
the noise issue i told the dealer that lubrication of parts is now redundant as its not worked 3 times and that parts need to be changed to rectify issue, they told me they need to justify changing parts, i was so annoyed, they just dont want to spend and literally plaster over the issue