I've had the 2007 A4 3.2 S-Line for almost 2 months now and have been hearing a lot of creaking on the interior. Everything I read says that these cars should be dead quiet. The noise comes from the panels over the doors which (I presume) cover the side airbags. I hear the noises mostly on hot sunny days. It creaks over every bump. I can push the plastic and get the sound too. I took it in to my Audi dealer, and they couldn't reproduce it very well (it was raining and cold), but also said they only guarantee against noise for 1 year. Anyone having this issue? On the plus side, I found out the car has the Audi care program on it, so the service was free

 

My car is older than yours and it's bank vault solid. I don't even slow down for rail road tracks. I wonder if you car had been in accident before.

 

The carfax on the car was clean when I bought it. I'm a little surprised by the noises, I didn't expect them on a car like this.

 

It is just one panel. Maybe the panel had to be removed and re-installed for some reason (maybe broken window). and they didn't do it right. Your car should not make creaking noises... it's far too new to be doing that.