Why is my Vauxhall Corsa engine making a strange noise?

I have noticed that my Vauxhall Corsa engine has been making a strange noise lately. It sounds like a rattling or knocking noise. What could be causing this and how can I fix it?

It is possible that the noise is coming from a loose or worn-out belt. Check the belts under your hood and make sure they are tight and in good condition.

Another potential cause could be an issue with the engine's valves. If they are not opening and closing properly, it can create a knocking sound. It's best to have a mechanic check this out.

Your car may also be low on oil, which can cause engine noise. Make sure to regularly check and top up your oil levels.