Feels like drivetrain / transmission slack

[MACHBUFFET]

Hi Guys
I have a 2007 E320cdi Sport estate - 85,000 miles with full benz history (verified)
I've begun to notice a bit of what I can only describe as "slack" in the drivetrain.
If I'm parked at the lights (more noticable if on a slight incline up) and drive away, there seems to be a little slack being taken up during initial acceleration.
This is only brief, but noticable. Same happens when coasting and then accelerating again.
Also, if I slow down and downshift (auto) then accelerate - it is noticable as well.
No audible clunk, no vibration and gearbox behaves superbly.
About a month ago, transmision level checked and ok (MB Dealer)

There seems to be a bit of a common thread with the prop coupling???

Any help greatefully received
Thanks

 

[Sp!ke]

I'd be looking at the drive shaft couplings in the first instance.

A relatively cheap and easy fix which transforms the drive should they be the culprit.

 

[NOMONEYBUTAMERC]

^ +1. My 450sl has similar symptoms and is almost sure to be the uj on the propshaft.