6c GTI 1.8 tsi Noise help

[Ghostjet]

I'm getting a noise when the revs drop to idle which almost sounds like my old diesel Pug, it is only audible when the ac and radio is off. It happens when then revs drop below 1200rpm to idle around 850rpm: it is only heard once the engine is warm after a 30min drive from work. It can be heard both when revved stationary or when the clutch is depressed and coming to a stop.

The car drives fine and there doesn’t seem to be anything moving or rattling around in the engine bay when it happens
I may be paranoid and the car may have done it since I’ve had it but I’ve only just started noticing it.

Is this noise normal or something to be concerned about?

I’ve attached a video to demonstrate the noise. edit both videos work best with headphones
https://www.youtube.com/watch?v=pSgD5dI ... e=youtu.be

YT link seams a bit temperamental so i also uploaded it to a second twitter account
https://twitter.com/Jack_9c/status/1192 ... 02976?s=20

Thanks for any help in advance.