X1 18i noise from engine like airplane

[SanduQi]

Hello guys, just bought to my girlfriend X1 2010 18i with n46b20 engine, 144000km.

After a trip longer than 15 min a strange noise starts from left side of the engine. Have you ever seen this before?

first video is while driving, second when stacionary.

https://youtube.com/shorts/wmUMrM3iR6Y?feature=share

https://youtube.com/shorts/HJEwR3MK8j4?feature=share

Thanks!