Why is my Vauxhall Astra's engine misfiring?

I have a 2012 Vauxhall Astra and it has been misfiring while idle and causing vibrations. What could be the cause of this and how can I fix it?

The misfiring could be caused by a faulty spark plug or ignition coil. It's best to take your car to a mechanic for a diagnostic test to determine the exact cause.

Another possible cause could be a clogged fuel injector. You can try using a fuel injector cleaner to see if that resolves the issue.

If the misfiring is only happening when the engine is hot, it could be due to a faulty engine coolant temperature sensor. Have it checked and replaced if necessary.