Why does my Ford Fiesta's engine feel underpowered?

I've noticed that my Ford Fiesta struggles to accelerate and seems to lack power. I've checked the oil and everything seems fine. What could be causing this issue?

It could be due to a dirty air filter, which can restrict airflow and reduce engine performance. Try replacing the air filter and see if that improves the power of your Fiesta's engine.

Have you checked your spark plugs? Worn or faulty spark plugs can also cause a decrease in engine power. Consider replacing them and see if that solves the issue.

Another potential cause could be a clogged fuel filter. A dirty fuel filter can restrict the flow of fuel to the engine, resulting in reduced power. Consider replacing the fuel filter and see if that makes a difference.