Why does my Ford S-Max's engine start to shake after long drives?

I recently went on a long road trip in my Ford S-Max and noticed that after driving for several hours, the engine started to shake and make strange noises. What could be causing this and what should I do about it?

It's possible that your engine is experiencing overheating, which can cause it to shake and make abnormal noises. I recommend checking your coolant levels and getting your engine checked by a mechanic.

This could also be a sign of worn out spark plugs or ignition coils. These are relatively easy and inexpensive fixes that can improve your engine's performance. I suggest getting a tune-up to see if this solves the issue.

Another possibility is that your engine is struggling due to a clogged air filter or fuel injectors. Regularly changing your air filter and getting your fuel injectors cleaned can prevent this issue.