How to troubleshoot a malfunctioning engine in my Vauxhall Insignia?

My Vauxhall Insignia's engine seems to be having issues, what should I do?

First, check the engine oil and transmission fluid levels. Low levels could be causing the issue. If they are low, top them up and see if that solves the problem. If the levels are normal, then you may need to take your car to a mechanic for a deeper diagnosis.

It could also be an issue with the spark plugs or ignition system. These can wear out over time and cause engine problems. I recommend getting them checked and replaced if necessary. You can also try cleaning them yourself, but if the issue persists, it's best to get professional help.

Have you recently changed your air filter? A clogged air filter can also cause engine issues. Check the filter and replace it if needed. It's an easy and affordable fix.