I've had my car back for about a week following a software update, which Audi admitted up front may help with the juddering, but won't fully fix the hesitation when pulling away. They told me the July software update, that others have mentioned here, should fix all of the problems...
I have to say, the juddering is slightly less severe, but now seems to happen more often. The hesitation is still there. There are also some new issues that have been introduced.
Since the update the car now sounds like it idles at a much higher speed, although the rev counter doesn't show this. It also feels like it has lost some power (when the power is finally delivered). Additionally, when the engine auto-stop kicks in the whole car now shakes, whereas before you couldn't even tell the engine had cut out.
Audi say they can take another look, but they don't think they can do anything and, because there is a fix/software update planned, they say any additional investigation/work may not be covered by the warranty.
In a nutshell - we know your car isn't working as it should, we know we have just made it worse with a software update, but we can't do anything about it and you're stuck with it until we try another software update in at least 4 months time.
I'm starting to regret my switch to Audi now...I think a quick chat with Citizens' Advice may be in order just in case this mythical July update doesn't work.