The 6.9L IDI Ford diesel - 21mpg highway / 16mpg city
The 7.3L IDI Ford diesel - 21mpg highway / 16mpg city
The 7.3L Powerstroke Diesel - 20mpg highway / 16mpg city
The 6.0L Powerstroke Diesel - 17mpg highway / 15mpg city
The 6.4L Powerstroke Diesel - 16.5mpg highway/ 14.5mpg city
The 6.7L Powerstroke Diesel - 21mpg highway / 17.5mpg city
14-19 mpg just depends on what kind of drive train
It seems to be around 13/18 city/Hwy
Bad!
between 17 to 19 mpg
MY EXPERIENCE WAS 12-13 MPG WITH NO MOD'S
2002 Ford F-350 Specs Check related link below
all in all with the variations of rear ends average of about 15
50 mpg for diesel
I think that year it came with the 7.3l and the 6.0l. I have the 7.3l and pull trailer 24/7 (24ft trailer aprox 8000lb gross) in town start and stop, and highway two days a week and get around 11-12 mpg. I'm not heavy on the throttle.
With 3.73 gears 16 mpg city 19mpg highway empty without putting your foot through the floorboard. Remember though your vehicle weighs over 7000 pounds empty, that's easily two mid size cars. 4.10 gears will be less.
Mine is getting 10ish without the overdrive engaging, so I'd guess it would do better with overdrive.
The estimated mpg (miles per gallon) for the 2003 Ford F250 is 11 miles in the city. The mpg for highway travel is an estimated 15 miles.