Why does my Vauxhall Astra engine make a loud knocking noise?

I've noticed that my Vauxhall Astra's engine has been making a loud knocking noise lately. It's quite concerning and I'm not sure what could be causing it. Any ideas?

It's possible that your Vauxhall Astra's engine is experiencing a misfire. This could be caused by a number of different things, such as damaged spark plugs or a faulty ignition coil. I would recommend taking your car to a mechanic to get it checked out.

Another thing to consider is that your Astra's engine oil may be low or dirty. This can lead to increased friction and engine knocking. Check your oil levels and consider getting an oil change if necessary.

In some cases, the knocking noise could be indicative of a larger engine issue such as a worn out bearing or piston. It's important to get this checked out as soon as possible to avoid any potential damage to your engine.