Hello from South Wales, UK.
I am an owner of a "58" plate A4 S Line 2.0 TFSI with just over 45,000 miles on the clock and had the car from new having previously owned an A3 from new.
I have a front cabin noise which sounds like plastic knocking or rubbing against plastic, for example a pen sliding back and fore.
The noise can be heard from stop-start whilst engaging first gear and extremely more noticeable whilst reversing and braking very hard.
The car had a major service in early September and also passed it's MOT with flying colours.
I think the noise could have developed after the visit to a main Audi dealership but I do not know for sure.
I have removed all loose articles from inside the car that could have possibly been the cause and have checked all that I can without any luck.
I thought the noise was coming from the front arm rest area.
Family and friends think likewise or the driver's front door area.
Before I contact my Audi dealership I would appreciate any input on the issue.
Thank you in advance.