What are the common issues with the Vauxhall Insignia engine?

I recently purchased a used Vauxhall Insignia and have noticed some issues with the engine. It doesn't seem to perform as well as it should and there have been some strange noises coming from under the hood. What could be causing this?

One common issue with the Vauxhall Insignia engine is a faulty fuel pump. This can cause a decrease in performance and strange noises.

Another potential cause could be a clogged air filter. This can lead to a decrease in fuel efficiency and cause strange noises.

It's also important to regularly check and change the oil in your Insignia. Dirty oil can lead to a variety of engine issues.