* Speed: Driving at higher speeds dramatically increases fuel consumption.
* Terrain: Driving uphill, in stop-and-go traffic, or off-road consumes more fuel than driving on flat, open roads.
* Driving Style: Aggressive acceleration and braking waste gas.
* Vehicle Condition: Proper tire inflation, engine tune-up, and overall vehicle maintenance affect fuel efficiency.
* Payload: A heavier load reduces fuel economy.
A 1998 Ford Expedition likely gets somewhere in the range of 12-18 mpg (miles per gallon), depending on the engine size (there were several options) and the factors listed above.
To estimate gas consumption:
1. Determine your average speed: Let's assume an average speed of 60 mph. In 4 hours, you'd travel approximately 240 miles (60 mph * 4 hours).
2. Estimate your MPG: Let's use a midpoint of 15 mpg.
3. Calculate gallons needed: 240 miles / 15 mpg ≈ 16 gallons.
Therefore, a rough estimate is around 16 gallons. However, this is just an approximation. The actual amount could be significantly higher or lower depending on the factors mentioned earlier. Your best bet for a more accurate estimate would be to check your vehicle's fuel consumption over a recent similar trip, or consult the owner's manual for fuel economy figures under various driving conditions.
