Why does my BMW M2's engine make a knocking noise?

I recently noticed that when I start my BMW M2's engine, it makes a knocking noise. What could be causing this and should I be concerned?

There are a few potential causes for engine knocking in a BMW M2.

One possibility is that there is something wrong with your fuel. Make sure you are using high-quality gasoline and consider getting a fuel system cleaner.

Another cause could be low oil levels or poor oil quality. Check your oil level and consider getting an oil change if needed.