Why is my BMW XM engine making a loud rattling noise?

I recently bought a BMW XM and I've noticed that when I accelerate, the engine makes a loud rattling noise. I'm not sure what could be causing it and I'm worried it could be a serious issue. Any ideas on what could be causing this and how I can fix it?

Hi Emma, the rattling noise in your BMW XM could be caused by a few different things. One possibility is that the engine is low on oil, which can lead to metal components rubbing together and creating the noise. I'd recommend checking your oil level and topping it up if needed. Another potential cause could be loose or worn out engine parts, such as the timing chain or valves. If this is the case, it's important to have a mechanic take a look and make any necessary repairs. I hope this helps!