* Engine size: While it's a V8, the exact displacement (e.g., 4.0L or 5.0L) affects fuel economy. The 4.0L was more common.
* Driving conditions: City driving yields significantly lower MPG than highway driving. Terrain, traffic, and even weather play a role.
* Vehicle maintenance: Properly maintained vehicles tend to get better gas mileage. Things like tire pressure, air filter, and tune-ups all matter.
* Driver habits: Aggressive driving significantly reduces fuel economy.
However, you can expect somewhere in the range of 14-17 mpg combined (city and highway) for a 4.0L V8, and slightly less for a 5.0L V8. Highway mileage might reach the low 20s, while city driving could be as low as 12 mpg or less.
To find a more precise estimate for a specific vehicle, you could try looking up the EPA fuel economy estimates for the 1999 Ford Explorer Eddie Bauer with the specific engine size from a reliable source like the EPA's FuelEconomy.gov website (though older data might be incomplete or unavailable online). However, remember that this is just an estimate; real-world mileage may differ.
