What are the common causes of engine trouble in Vauxhall Insignia?

My Vauxhall Insignia has been having some engine issues lately. It's been making strange noises and has been stalling frequently. Can you provide me with some insight on what could be causing these problems?

One of the most common causes of engine trouble in Vauxhall Insignia is a faulty spark plug. I recommend checking and replacing your spark plugs if needed.

Another possibility could be a clogged air filter. If your air filter is dirty, it can lead to poor engine performance. Make sure to replace it regularly.

Low oil levels or dirty oil can also cause engine trouble. Check your oil levels and consider getting an oil change if needed.