u/A_Sad_Boi

Looking for some advice on what may be causing this rattle noise. Not sure if the video does justice to how loud this sounds at speed. Sounds as if there's a stone rattling around somewhere in my engine bay. Sound is coming from driver's side under the hood.

Most commonly heard at moderate speed, 3rd 4th gear 3k RPM. Sometimes high gear low RPM. Sometimes I'll go for drives and I barely if at all hear it. Very inconsistent, not rhythmic.

Any ideas? Dealership could not find any issue with the car that could be causing this. 2022 20k miles manual