Hi, I’ve a 2012 a6 avant, been developing a knocking noise form the front drive side like a drop link noise, found it to be play on the driveshaft on the gearbox side about 5mm up and down, has anyone came across this before found a reason or solution? Thanks in advance 

Hello Gavin,

Is the noise more evident on one lock direction than the other, and does it occur in the straight ahead direction as well. 
It might be worthwhile getting a local second opinion before moving forward to replace the joint or the complete shaft. 
I’ve bought quality aftermarket parts from Car Parts in Motion ( no connection) at good prices, so might be worth seeing if they do these. Alternatively, I did use Driveshafts U.K. ( I think that’s what they were called ) in the Midlands a few years back. They were doing a repair service then. 
Hope some of this helps.

Kind regards,

Gareth. 

Hi, thanks for the reply, more so when car is in a straight ahead position, when turning left (transferring weight to the right) noise disappears, there isn’t any leaks etc, will look into thanks 🙏🏻