Good day.We own a 2013 Ford F250, 6.7 Diesel, and I am looking for suggestions on what I can do to improve our mileage. In general driving we are getting 11.8 MPG. I haven't pulled my rig with this truck yet so I am unsure what to expect once we do.Your suggestions and experience would be much appreciated.Regards,Tim Lerchbacker

I drive one on occasion for work pulling a goose neck trailer with up to 10K payload and it averages between 9.5 & 10 mpg. empty truck only maybe 12 mpg.

Wait----the mileage is under 12 mpg in general driving? I would have thought the mpg would be more. Mercy! Having said that, they sure are good looking rigs.

If I do mixed miles 1/2 and 1/2 highway and town I get about 14 empty if I do all in town driving which I seldomely do I get about 12. These big beasts are not much for around town. Empty going down the highway I can get about 17 mpg. Always about 12 towing 5th wheel or 13 or so with the TC. Of course mine is not a Ford but I think they all get about the same around that year.

Somethingmis wrong! That new of a truck should be getting 17 MPG all day. Unless your doing all stop and go city driving. My first gen 6.7L Cummins dually with 4.10 rear end gets 17 highway non towing. Towing my 13,500 pound fiver I see 10.5-11.5 all day.

Empty and you're only getting 11.8 MPG????????On an F 250??????Good grief, I previously owned a 2011 F 350 crew cab dually with the 6.7L diesel and I got a LOT better than that empty. Driving slow at night (58 MPH) I got 20 miles to the gallon once, and could usually average a good 16-17 miles per gallon.Somethings wrong with your truck. I'm not mechanical enough to venture a guess, but something is really wrong to get that poor a mileage.Or, you've got diesel thieves. :B

2013 Ford F250, 6.7 Diesel, Suggestions to improve mileage.

Lynnmor
Explorer
Sep 15, 2015
DEF usage and regens are two different subjects. Def is consumed as needed at any time.
tlerchba
Explorer
Sep 14, 2015
Update. I took it to a local Ford dealer who replaced the #3 EGT sensor. O'Riley auto parts said it was the #4 sensor, but . . . They also said it didn't need a Manual Regen which I find hard to believe because I don't believe it's done one for some time given I haven't had to add and blue-def for 3 or 4 months. They also did a chip software update which is supposed to help with the mileage. However, I drove it home, about 6 miles, didn't drive it for 3 days, and when I got in it this morning the engine light was back on. So, back to Ford I'll be going. I will ask them about MAF Sensor, thanks for the suggestion. The saga continues. Again I very much appreciate all the great feedback!!!
Tim
alexleblanc
Explorer
Sep 14, 2015
you've certainly got an issue, i'm getting 10-12mpg towing and in the mid-high teens mixed unloaded driving. This has been the case since I got the truck two years ago this week. (60000 km's now)
Bamaman11
Explorer
Sep 14, 2015
You might want to sign into TheDieselStop.com and see what is being reported on the 6.7 engine. You may have a problem.

It seems like 18 mpg would be normal with 3/4 tons sometimes reporting 20 mpg.

I have the last of the 7.3's with a 80 hp econo tune, and I see about 20 mpg on the open road. I'm getting 11.5 mpg towing a 11K lb. fifth wheel.
Mtwoodson
Explorer
Sep 14, 2015
I have to go along with the crowd. You have something out of whack. My 2013 F350 6.7 gets 17 around town, a little more on the road and 11 with a 16K trailer behind it. Good luck.
N-Trouble
Explorer
Sep 01, 2015
GoPackGo wrote:
One last thought - check your air cleaner. Is it the original ? A badly clogged air cleaner can cause really bad mpg.

To go one step further pull the MAF sensor on the intake while you are at it. At dirty MAF sensor can cause all kinds of issues including horrible mileage. Don't touch the sensor (wires) though. Use an aerosol MAF spray cleaner from an auto parts store.
GoPackGo
Explorer
Sep 01, 2015
One last thought - check your air cleaner. Is it the original ? A badly clogged air cleaner can cause really bad mpg.
rhagfo
Explorer III
Aug 31, 2015
TXiceman wrote:
2012 F350 CC DRW 6.7L, 3.73 axle, towing 18,000# and we get 9 to 10 mpg at 63 mph. Unloaded on the highway at 65 mph, 15.5 to 16 MPG. mixed highway and city, we generally get 13 to 14 mpg at the lowest. Lowest fuel economy was a 20 to 25 mph head wind and we dropped to 7.6 mpg, but had no problem maintaining 63 mpg.

If the OP is getting 11.8 mpg unloaded, he either has an engine problem or a really heavy foot.

Ken

X2
TXiceman
Explorer II
Aug 31, 2015
2012 F350 CC DRW 6.7L, 3.73 axle, towing 18,000# and we get 9 to 10 mpg at 63 mph. Unloaded on the highway at 65 mph, 15.5 to 16 MPG. mixed highway and city, we generally get 13 to 14 mpg at the lowest. Lowest fuel economy was a 20 to 25 mph head wind and we dropped to 7.6 mpg, but had no problem maintaining 63 mpg.

If the OP is getting 11.8 mpg unloaded, he either has an engine problem or a really heavy foot.

Ken
tlerchba
Explorer
Aug 31, 2015
All

Thanks much for everyone's comments. This is my second diesel, first was with a 2001 Ford Excursion which I got 17/18 in the city and 20+ on the road. I am the second owner, I get about the same mileage in the city or on the road. Best I've gotten on the road was a little over 12. The overall pickup seem fine, has what I would call the usual turbo run-up slowness, other than that no real hesitation. I think I will take it to a dealer and see if it is stuck in regen mode. Any other suggestions would also be very much appreciated.
Tim