Just for reference, I have an Audi A3 2.0 TDI s-tronic
I have had this issue for 2 years, It is extremely annoying.
Initially the issue was when I turned left at around 70 mph (annoying as I drive 3 hours on the motorway each way every weekend). and could hear a vibration from the front left, changed all 4 tyres, Didn't make a difference. Had the car checked out safety wise and they said everything was ok, so I just turned my music up. I've just had the gearbox fluid changed at an Audi specialist as it was overdue. The interesting thing was they said that it had too much fluid in the gearbox so they drained it and filled it back up, now the issue is when I turn right from about 20mph and gets to its loudest at 50mph then it gradually gets quieter. At 50 though it's pretty loud.
Just for information I've had brakes disks and callipers changed at the front just as the callipers were sticking. And this obviously made no difference! I may go to my Audi specialist on Friday and ask if they know anything about the issue or if it means my gearbox is on the way out.
