Forum Discussion

Groover's avatar
Groover
Explorer II
May 14, 2019

F150 Ecoboost vs F250 Diesel mileage

I have been pulling my equipment trailer for my business with an F150 3.5 Ecoboost for 3 years now and averaging about 8.7mpg on 87 octane. I got rear-ended last week and the Ecoboost will be in the body shop for at least two weeks so yesterday I rented a brand new F250 diesel to fill in. Does anyone want to hazard a guess on the what my fuel economy with the diesel will be? I am sure that I will find it very interesting.

The trailer is a 22' flatbed deckover with 60hp tractor, stump grinding attachment and front end loader. The tires are water filled. I have never weighed it but I am pushing the 11,200lb tow rating of the F150. I mostly drive 2 lane county roads with rare forays on the interstate and then only for a few miles.

Both trucks are crew cabs with 6.5ft beds and 4wd so fairly even there. I am going to try my best to drive the same. The EcoBoost was never power limited and don't expect the diesel to be either.

59 Replies

  • A bit over 4000 miles on our last trip pulling a 29' TT. We averaged 15.7 mpg for the trip with our Ram 3500 5.9 and 6 speed manual transmission.
  • I am willing to bet the F250 gets better mileage pulling the same trailer than the ecoboost.
  • I own both engines, Ecoboost in a 2018 Expedition and a 2015 F350 PSD/SRW. I use the truck to haul a 3000lb truck camper, no towing. I get about 10-12 mpg. But of course diesel is more expensive than 87 octane.
  • Same guess 11-12mpg. Potentially a shade better if you're driving economically (tough to do with a truck that will smoke some cars from a dig, while towing the tractor!)
  • philh wrote:
    Does your rental agreement permit towing?


    Who cares....myob imo
  • philh wrote:
    Does your rental agreement permit towing?


    Yes, I rented from Enterprise Commercial and specifically asked for a truck that could safely tow 12,000lbs. I left the parking lot towing my Ranger on a dolly. They even helped me hook it up.
  • I just did a 800 mile trip through the rocky mountains hauling a similar load to yours (18' trailer, skid steer with implements. My SRW 3500 returned 12.2 mpg.

    I am with ShinerBock, 11-11.75 mpg