Why is the engine making a rattling noise in my BMW 4 Series?

I recently noticed that my BMW 4 Series engine has started making a rattling noise. This noise is more prominent when I start the car and seems to lessen as the engine warms up. Is this something I should be concerned about? What could be causing this noise and how can I fix it?

The rattling noise in your BMW 4 Series could be caused by a variety of issues, such as low oil level, worn out timing chain, or loose components. It's important to have this checked by a certified mechanic as soon as possible to prevent further damage to your engine.

I had a similar issue with my BMW 4 Series and it turned out to be a faulty water pump. I would recommend taking your car to a reputable mechanic who has experience working with BMWs.