Why is my Vauxhall Astra engine making a knocking sound?

I recently noticed that my Vauxhall Astra's engine started making a knocking sound. It seems to be happening more frequently now. What could be causing this issue and what should I do?

The knocking sound could be caused by a few different issues. It's best to take your car to a trusted mechanic to diagnose the problem. In the meantime, make sure you're using the correct grade of oil and performing regular maintenance checks.

I had a similar issue with my Astra before and it turned out to be a problem with the fuel pump. Make sure to check all of your fuel system components for any potential issues.

It could also be a problem with the spark plugs or engine valves. If you're not comfortable checking these yourself, it's best to take your car to a mechanic. Ignoring the knocking sound could result in further damage to your engine.