Answers: Basically they are 2 different body styles.
The Explorer is a 4 door SUV with an roofed cargo nouns in the flipside.
http://www.fordvehicles.com/suvs/explore...
The Explorer SportTrac is a 4 door SUV with a small pick-up style bed within the rear.
http://www.fordvehicles.com/suvs/sporttr...
Note: fuel consumption will swing depending on which powertrain you choose. Both vehicles are available contained by 2wheel-drive or 4wheel-drive & both vehicles enjoy the options of a V6 or a V8
Here are some comparisons of in recent times a few of the powertrain configurations.... you can change the comparisons for more detailed information
http://www.fordvehicles.com/suvs/explore...
EXPLORER'S are mid-sized SUV's. SPORT TRACK'S are the pick-up magazine of the Explorer. Average gas consumption is 17MPG. Compare the difference on yahoo! autos
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