My year old etron GT had a complete heating failure around 3 weeks ago. I live in Scotland and in winter it is making the car pretty unusable. Audi are unable to say how long until parts will be available, but the local Audi dealership said they have three other customers with GTs with the same issue. I can see some older posts on heating issues. Does anyone else have experience of heating issues recently and how quickly was the problem rectified. We are also struggling to get Audi to provide a decent replacement vehicle to use whilst we wait an indefinite amount of time for the repair in the middle of winter.