Why does my BMW 8 Series engine make a strange noise?

I recently bought a used BMW 8 Series and I've noticed that the engine makes a strange noise when I start the car. It goes away after a minute or so, but it's still concerning. What could be causing this and how can I fix it?

It's not uncommon for BMW engines to make a strange noise upon start-up. This could be due to a number of factors such as air in the fuel lines or worn out engine mounts. It's important to get it checked by a mechanic to determine the exact cause.