* Around 14-16 mpg combined (city and highway) for the 4.6L V8 engine. This is a common engine in the 2003 model year.
* Slightly lower MPG (maybe 13-15 mpg combined) for the 5.4L V8 engine. This larger engine offers more power but sacrifices fuel economy.
* 4WD versions will generally get slightly lower fuel economy than their 2WD counterparts.
Keep in mind that these are estimates, and your actual mileage will vary based on driving habits, terrain, vehicle condition, and other factors. Driving aggressively in city traffic will significantly reduce fuel economy compared to highway driving.