* Engine size: The specific V8 (e.g., 5.2L, 5.9L) will affect fuel economy. Larger engines generally get worse gas mileage.
* Driving habits: Aggressive acceleration and excessive idling drastically reduce fuel efficiency.
* Vehicle condition: Proper maintenance (including properly inflated tires and a well-tuned engine) improves gas mileage.
* Terrain: Driving in mountainous areas or off-road will lower MPG.
* Payload: A heavier load will reduce fuel economy.
To get a more accurate idea of the gas mileage *your specific truck* gets, you should check the owner's manual (if you have it) or track your fuel consumption over several fill-ups.
