Knocking noise when releasing accelerator

[S5AudiS5]

Hello

What may cause a knocking noise when taking the foot off the accelerator pedal (front, right side)?

The knocking noise is audible only when driving and releasing the accelerator - if braking still knocking but when touch the accelerator it dissapears

Could it be an engine mount?

[swalker]

knocking under braking - auto or manual?
if manual i would say you have warped disks and a you need to get you suspension checked. probably something like a drop link
if auto yes that opens it up to engine mounts?

[Crasher]

Bottom ball joint, common 8K failure

[S5AudiS5]

The knocking is audible only when the accelerator pedal release.
While braking - still knocking but disappears only when touch the accelerator :/

Auto (Tiptronic)

The complete front suspension was replaced 3~4k km ago... It looks OK

[swalker]

check engine mounts and exhaust - get someone to se if they can see excessive movement with the bonnet open as you step on and of the accelerator and brake.

[S5AudiS5]

Issue solved!

Right engine mount died

[Crasher]

Not a common failure

[swalker]

Happy days , was it an easy enough swap out?

[S5AudiS5]

I would say about 2h job