What could be the cause of engine misfires in a Vauxhall Astra?

I have noticed that my Vauxhall Astra's engine has been misfiring lately. What could be the possible reasons for this issue?

You may have a faulty spark plug or ignition coil. It is best to have these components checked and replaced if necessary.

The air filter may be clogged, causing a lack of air flow to the engine. Have it replaced to improve engine performance.

It could also be a fuel system issue, such as a dirty fuel injector or a clogged fuel filter. It is recommended to have a professional inspect and clean these parts.