Why does my BMW X5 engine make a strange noise?

I noticed that my BMW X5's engine is making a strange noise. It sounds like a knocking or tapping noise. What could be causing this and how can I fix it?

It's possible that your engine's valves are not opening and closing properly, causing the noise. I would recommend getting it checked by a mechanic to diagnose the issue.

Another cause could be low oil pressure, which can lead to inadequate lubrication and cause knocking noises. Make sure to regularly check your oil levels and top up if needed.

If you have recently changed your oil or oil filter, it could be a faulty or incorrect filter causing the noise. Consider taking it back to the mechanic to check if the correct filter was used.