What are the potential causes for a rough idle in a Vauxhall Insignia?

I have noticed my Vauxhall Insignia has a rough idle when at a standstill. What could be causing this issue?

One potential cause for a rough idle could be a dirty air filter. It is important to regularly replace and clean your air filter to ensure proper engine function.

Another possible cause is a malfunctioning ignition coil. If your engine is not receiving enough spark, it can result in a rough idle. Consider having your ignition coils checked and replaced if necessary.

A clogged fuel injector could also be the culprit. Poor fuel delivery can lead to a rough idle. Consider using a fuel injector cleaner to improve engine performance.