What is the most common issue with Ford Fiestas?

I've noticed that my Ford Fiesta has been having trouble accelerating and the engine is making strange noises. What could be causing this and what steps should I take to fix it?

It's possible that your spark plugs need to be replaced. Have them checked and replaced if necessary to improve your car's acceleration. Also, make sure to regularly change your oil to prevent engine problems.

Low fuel pressure or a clogged fuel filter could also be causing these issues. Consider getting your fuel system checked and cleaned to see if that solves the problem.

Another common issue with Ford Fiestas is a faulty mass air flow sensor. If this is the case, you will need to replace it in order to improve your car's performance.