Blksmk
Full Access Members
5.4 3v 170000 miles 140 miles wind was strong head on. Stock. 18.25 mpg hand calculated.
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2015 Expedition XLT 4WD
3.5 Ecoboost V6
no mods, no trailering
I've recorded every gallon of gas put into the vehicle since new using the Fuelly (aCar) app.
As of last fill-up, 64,111 miles, 3707.23 gallons, 17.3 mpg. MPG on individual fill-ups has ranged between 14.8 and 22.1.
Model : 2003 Expedition EB w/ 3.73
Engine : 5.4L 2V
Mileage : 210,500
Current average MPG : 13.1
Mods : None
Recent maintenance : Synthetic 5w30, Air filter, fuel filter
To do : None.
I purchased this about 6 months ago and it was very well maintained and runs smoother than all but one other vehicle I've ever owned but that one had 1/4 the mileage.
I fill up at the same station, generally the same pump, at usually even close to the same time of day. Theres a shell directly across from my work, quite convenient. My real calculated mileage is usually within .2mpg of what the info center displays. Info center is always higher. I've put approx 5k on it since purchase and just changed the oil. No change so far.
Our expy sees about 90% city with hwy usually no more than 10min or so at a time so not much to skew info, the getting on and up to speed probably burns as much fuel as cruising saves for the short run. It gets driven a very predictable route almost weekly, not much variance in our schedule and I typically never get stuck in traffic just due to the times I work and when we generally do things.
It gets what I expected, not unhappy. Higher mpg would always be great but 4spd and 3 tons can only do so much w the 3.73's. My worst has been about 11 with extended idling and best of 16 and change.