Bang underneath car

[MB1st timer]

I seem to get a banging noise underneath my car on uneven surfaces around the transmission tunnel area,also when starting the car,does anyone have any ideas?
W211 320 cdi

 

[Benzowner]

Loose bottom tray?

 

[merc85]

Engine, and or gearbox mounts ?

 

[Giantvanman]

Thought you were bragging there. Still convinced it couldn't be done.

 

[stwat]

Exhaust

 

[Alps]

exhaust
gearbox mounts
rear diff doughnut

id start there

 

[saff]

All of the above.

Suggest get it on a lift for an inspection.

 

[MB1st timer]

Thanks all
Will get on lift and check out