Why is my Vauxhall Movano's engine making strange noises?

I recently purchased a Vauxhall Movano and have noticed that the engine makes strange noises while running. It almost sounds like a knocking or rattling noise. What could be causing this issue?

It is possible that there is an issue with your engine's timing belt or chain. These can become worn over time and cause unusual noises.

Have you checked your oil levels and changed the oil as recommended? Low levels or old oil can also contribute to engine noises.

It could also be an issue with your engine's spark plugs or ignition system. These should be checked and replaced regularly to avoid issues.