Just to add to Mikes questions:
- is it just an odd stutter every 10 secs or so, or is it a very lumpy idle?
- does the rev counter move?
My old K03 GTI did exactly the same thing, I have put it down to carbon on the valves (67k miles). When I sprayed the wynns EGR cleaner in the inlet it did help a little, and as the car drives so well, pulls smoothly etc I'm not too bothered.
Awesome GTI seem to think its normal for TFSI's to do this at idle, and if you look on the other Golf forums a lot of others are having the same issue on K03 GTIs too as well as ED30s. . . .
Does anyone have a perfectly smooth idle without the slightest feeling of lumpiness in the drivers seat??