The GT doesn't have a spoiler as such.
So what do you call it?
The standard one is ok the bigger you go the more $hit it pulls up of the road and on to the rear window which is a fault of the Mk6.
It's something and nothing of a spoiler. I'm not too bothered about the $hit on the back. It's nothing compared to how dirty a Mk2 gets in a very short distance. (Not that my current one goes out in the rain)
