How to troubleshoot engine issues in a Ford S-Max?

I've been experiencing some strange engine noises and decreased performance in my Ford S-Max, and I'm not sure what could be causing it. Any advice on how to diagnose and fix these issues?

First, check your engine oil levels and make sure it's not low. Low oil can cause excessive engine noise and reduced performance. If that's not the issue, it could be a problem with your spark plugs or fuel filters. It's best to take it to a mechanic for a diagnostic test.

It could also be a problem with your ignition system or fuel injector. If you're comfortable with doing some basic maintenance yourself, you can try cleaning the fuel injectors or replacing the spark plugs. Otherwise, it's best to take it to a professional for proper diagnosis.