* Engine size: While it was a 6-cylinder, the exact displacement (e.g., 4.0L) affected fuel economy. The most common was the 4.0L.
* Transmission type: Automatic or manual transmissions impacted mileage.
* Driving conditions: City driving yielded lower MPG than highway driving. Terrain, weather, and driving style also played a role.
* Vehicle condition: Proper maintenance (tune-ups, tire pressure) improved fuel economy.
Considering these factors, a reasonable estimate for a 1993 Ford Explorer 6-cylinder (likely the 4.0L) would be:
* City: 13-15 mpg
* Highway: 17-19 mpg
These are just estimates. The actual mileage could be higher or lower. The best way to know the gas mileage of a *specific* 1993 Ford Explorer is to check the owner's manual (if available) or to test it yourself by tracking fuel consumption over several tankfuls.