X5 30d churning sound - new vid

[b3magic]

Hi All,

Posted about this before but not had much luck on here or with BMW Service techs who have said the car is fine and checked intercooler, boost and charge pipes.

I get this churning sound after a bit of hard acceleration whilst driving, it is much louder when I come to park up the car and try to reverse with a bit of medium acceleration up my driveway.

I have managed to replicate and upload a short video please focus on seconds 4-6 for the sound which in the video isn't as pronounced but it can be heard.

Doesn't happen all the time usually every 10 days or so.

Vid below, sound is at 4-6 seconds.

https://youtube.com/shorts/352lhhdCiFE?feature=share

Cheers