How to improve the functionality of my Ford Focus engine?

I'm having trouble with the engine of my Ford Focus, it seems to be lagging and not performing as well as it used to. What are some things I can do to improve its functionality?

One thing you can do is regularly change the oil and air filter in your Ford Focus. This will help keep the engine running smoothly and prevent any build-up that can affect its performance.

Another tip is to take your car for regular maintenance and tune-ups. A professional mechanic will be able to identify and fix any issues with your engine, ensuring that it runs at its best.

If you haven't already, consider using a higher octane fuel in your Ford Focus. This can help improve the performance of the engine and give you a smoother ride.