So a week ago I had a van reverse into my parked car the back bumper come loose the black part at the bottom nothing more.

 

I noticed tonight whilst pulled up for 5 mins a weird noise coming from my engine bay the car wasn't in gear and idling whilst I waited the noise can be heard as a dull thud inside the car (it was enough for me to turn my music off) you could hear it from outside the car too it's about every 5 seconds the car drives fine but this has only just started.

 

I have 37000 on the clock I bought it from the dealer with 27k on the clock and had no issues till this bump happened 

 

It's like a thump and click towards the end of the video anyone know what it could be 

Sorry didn't add first time the normal motor sound is fine however it's the thump click that's new 

Sounds to me like my 1.2tsi Roomster. I have had the noise since new, a 'slurping' noise from the expansion bottle.