Why is my Nissan Micra's engine making a knocking noise?

I recently started my Nissan Micra and noticed a strange knocking noise coming from the engine. Is this something I should be concerned about? What could be causing it and should I take it to a mechanic?

It's always important to get any strange noises checked out by a mechanic, no matter how small they may seem. The knocking noise could be a sign of a larger issue that could lead to costly repairs down the road.

The knocking noise could be caused by a variety of things, such as worn out engine bearings or a loose part. It's best to have a mechanic take a look at it to accurately diagnose the issue.