What causes the sudden drop in fuel efficiency in Ford EcoSport?

I have been experiencing a noticeable decrease in my Ford EcoSport's fuel efficiency. I'm not sure what could be causing it, but I want to know if it's a common issue and how I can fix it.

From my experience, the most common cause of a sudden drop in fuel efficiency in Ford EcoSport is a clogged air filter. I would recommend checking and replacing it if needed.

Make sure you are using the recommended fuel grade for your Ford EcoSport. Using a lower grade can result in decreased fuel efficiency.

Another thing to consider is your driving habits. Are you frequently accelerating and braking hard? This can have a significant impact on your fuel efficiency.