How do I troubleshoot my Vauxhall Corsa's engine misfires?

I have been experiencing engine misfires on my Vauxhall Corsa causing rough idling and decreased fuel efficiency. What could be the root cause of this issue and how can I solve it?

It could be a faulty spark plug or ignition coil. Try replacing them first and see if the issue persists.

Check your fuel injectors for clogs or leaks. This could also cause misfires.

Make sure your air filter is clean and not clogged. A clogged air filter can also contribute to engine misfires.

If none of the above solutions work, it may be an issue with the fuel pump or fuel pressure regulator. Get these components checked by a mechanic.