Why is my Vauxhall Crossland making a whistling sound while idling?

I recently noticed that my Vauxhall Crossland is making a high-pitched whistling sound when it is idling. It goes away as soon as I start driving, but it is quite loud and concerning. What could be causing this and is it something I should be worried about?

The whistling sound could be coming from a loose or damaged belt in the engine. It is important to get this checked by a mechanic as soon as possible to avoid any potential damage to your engine.

Another possible cause could be a leak in the exhaust system. This could be accompanied by other symptoms such as decreased fuel efficiency and a decrease in engine power. It is best to have a professional check for any leaks and repair them if necessary.

Sometimes, the whistling sound can be caused by a faulty air filter. If it has been a while since you last changed your air filter, it is a good idea to have it replaced. A clogged air filter can also affect your fuel efficiency and performance.