I get an annoying clunk from the rear.

It happens when going from reverse to drive, coming to an abrubt stop, going over a pot hole.

i've had a good rummage around the back, removed the motor mounts and they were still firm ish, the only bit of slight play I could find was on the rear coffin arm, the bush in the middle had a slight play in it.

But this doesnt explain the knock at a standstill going from reverse to drive?

 

2004 996 3.6 Tiptronic, everything is standard fitment BTW

 

transmission mount is worn out is my guess.