Why is my Vauxhall Insignia making a strange noise while idling?

I have noticed that my Vauxhall Insignia has been making a strange noise while idling. It's not a loud noise, but it's definitely noticeable. What could be causing this and should I be worried about it?

There could be a few reasons for this noise. It could be a problem with your exhaust or muffler, a worn out serpentine belt, or even a faulty idle control valve. It's best to have a mechanic take a look at it to diagnose the issue.

I had a similar issue with my Vauxhall Insignia and it turned out to be a problem with the air filter. Make sure to check and replace your air filter if needed. That should help alleviate the noise.

It could also be a sign of a bigger issue with your engine. If the noise persists and you notice any other abnormal behavior from your car, it's important to have it checked by a professional as soon as possible.