Why does my Vauxhall Mokka's engine make a rattling noise?

I recently noticed that my Vauxhall Mokka's engine has started making a rattling noise. What could be the cause of this and how can I get it fixed?

The rattling noise could be caused by a loose heat shield on the exhaust system. This can easily be fixed by tightening the bolts on the heat shield. If the noise persists, it may require a visit to a mechanic to inspect the exhaust system further.

Another possible cause could be a problem with the timing chain. This is a more serious issue and should be addressed immediately to avoid further damage to the engine. It is recommended to take your car to a trusted mechanic for a proper diagnosis and repair.

If the rattling noise only occurs when the engine is cold but goes away as it warms up, it could be due to low levels of oil. Check your oil level and top up if necessary. If the noise persists, it may be a good idea to get the oil pump and oil filter checked as well.