Why does my BMW X3's engine make a knocking noise?

I recently noticed that the engine in my BMW X3 is making a strange knocking noise. It seems to happen mostly when I accelerate or decelerate. What could be causing this and is it something I should be worried about?

Hi Emily, I understand your concern about your BMW X3's engine noise. The knocking noise could be caused by a few different things, such as worn engine bearings or incorrect engine timing. It's always best to have a professional mechanic take a look and diagnose the issue to avoid any potential damage to your engine. I would recommend scheduling a service appointment at your local BMW dealership and mentioning the noise to them. They will have the necessary tools and expertise to accurately diagnose and address the problem.