* Engine size: A 4.2L V6 will get considerably better gas mileage than a 5.4L V8 or a Power Stroke diesel.
* Transmission: Automatic or manual transmissions will impact fuel economy.
* Drivetrain: 4x2 (two-wheel drive) will be more fuel-efficient than 4x4 (four-wheel drive).
* Driving habits: Aggressive driving, idling, and excessive use of the air conditioning will lower gas mileage.
* Vehicle condition: Properly maintained vehicles tend to get better gas mileage.
* Payload and towing: Hauling heavy loads significantly reduces fuel economy.
Therefore, I cannot give you a single MPG figure. To find the gas mileage for *your specific* 2003 Ford pickup, I recommend checking these resources:
* Your owner's manual: This should list the EPA estimated MPG for your particular engine and drivetrain configuration.
* The FuelEconomy.gov website: This website, run by the US Department of Energy, allows you to search for fuel economy data based on year, make, model, and engine.
* Online forums: Search for forums specific to 2003 Ford pickups. Owners often share their real-world fuel economy experiences.
Expect a range from the low teens (MPG) for larger engines and 4x4 configurations to perhaps the mid-twenties for smaller engines and 2-wheel drive.