Why is my Vauxhall Mokka experiencing a rough idle?

I recently purchased a used Vauxhall Mokka and have noticed that it has a rough idle. It seems to rev up and down when I am at a stop. What could be causing this issue and how can I fix it?

One of the common causes for a rough idle in a Vauxhall Mokka is a dirty or faulty air flow sensor. I would recommend cleaning or replacing the sensor to see if that resolves the issue.

It could also be a problem with the spark plugs or ignition coils. Check for any signs of wear or damage and replace them if necessary. Keeping up with regular maintenance can also prevent rough idling in the future.

Another potential culprit could be a clogged fuel filter. This can restrict fuel flow and cause a rough idle. Consider replacing the fuel filter to see if it improves the idle.