I use ACC a lot, and I like it. I live in London so I'm pretty much always in traffic, so the stop start feature is great - I have the S-tronic S3 Sportback.
I have found recently, that when I'm on an empty stretch of road and the acc is driving at its (say 40mph) setting for a while, it does...
Sorry if this is a stupid question.. but I've noticed on a cold start that when I move off the car stutters and judders between gear changes. Is this misfiring ? I ask because I also have the coolant loss problem which will be investigated when the car is serviced next week !!
Thanks for all your responses. Turns out this is actually efflorescence!
I park in an underground car park every day, and I think when some water has leaked through the concrete onto my car it took some of the minerals with it.
A bit like stalagmites. That explains the screen staining.