Car drives fine but if i put my foot down and accelerate hard it clunks  a few times and then is fine,it's as if something is catching up with its self? comes from the rear.This only happens when i put my foot down,any other driving is fine with no clunk at all.

 

octavia 1.4tsi.

 

any ideas?

Edited 2 March, 201511 yr by dudgers

Worn bushes somewhere in the rear suspension?

 

Loose exhaust hitting something else?