Why is my Ford Ranger's fuel efficiency decreasing?

I have noticed that my Ford Ranger's fuel efficiency has been getting worse over time. What could be causing this and how can I improve it?

One of the main reasons for decreasing fuel efficiency in Ford Rangers is dirty air filters. Make sure to replace them regularly to improve your vehicle's gas mileage.

Another factor that can contribute to decreasing fuel efficiency is having low tire pressure. Be sure to check your tire pressure regularly and keep them properly inflated.