I took it out again and first gear does sound different, I am not sure what it is, they are still saying it is fine so once I take delivery of it I will take it by the VW dealer across the road and ask them

If it is something it will be covered in the first 2 months anyway. One more noise I found was a loud squealing noise from the back left when turning left, could just be the brakes but they are gonna get that fixed too ... this could cost them a fair bit haha
The traction control button says "off" and won't go on and there is a car skidding on the dash. They didn't say what it could be, but that it will be fixed before I get it.
I didn't get a chance to see the mirror dim but it has as little green light under it and seems to be another light to the right of that?
I heard it beep once when put into reverse but I didn't reverse next to anything to hear them working. If there is anything wrong with it though it should be covered under the 2 months?
I take it the cup holders can break easily? maybe the last owner broke it and just bought a black one? I played with it and it seems to function OK anyway.
What all can the screen between the dials do? I managed to cycle mpg, miles to empty, average speed things like that. There was buttons on both stalks but I don't know what the ones on the left do, they were set and reset I think? If I was to swap out the stereo for an after market one should the computer in the middle still work?
Cheers for all the help guys, getting the car on the 15th ... can't wait

for the last 3 years I have had turbo diesels and the noise the GTI makes is soooooooo much nicer!!!