6.7 mileage?
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Mountain Pass
Joined: Jun 2014
Posts: 173
Likes: 1
From: ND
6.7 mileage?
I'm new to the new diesels and am looking for more info. My father is looking to upgrade and would like to know what you guys get for mileage empty, and pulling a gooseneck loaded. he cant decide between a 6.4 or a newer 6.7. help please!
Post Fiend
Joined: Mar 2013
Posts: 5,929
Likes: 287
From: EC Iowa
Worst I have gotten was pulling in the winter, sub zero temps, wind, hills.
9.4 Mpg.
best I get, not loaded, not in a hurry, under 70 mph. Quite often 19.6 to 20.1 mpg.
Hope this helps
Oh on edit I usually regen every 500 Mi.
9.4 Mpg.
best I get, not loaded, not in a hurry, under 70 mph. Quite often 19.6 to 20.1 mpg.
Hope this helps
Oh on edit I usually regen every 500 Mi.
Mountain Pass
Joined: Apr 2007
Posts: 147
Likes: 1
From: Fairfax Station, VA
I got 18 bringing my "new to me" ride home to Atlanta from Houston. Doing 70. Later, when I stepped it up to 80 it dropped to 16.5. Now, around town it appears to be about 15.5 Keep in mind it only had 3800mi on it when I got it and I'm only on my 3rd tank of gas. That 37.5 gallons goes a LOOOOONG way!
2015 6.7, CC, Long Box, 4X4, Lariat.
2015 6.7, CC, Long Box, 4X4, Lariat.
Post Fiend
Joined: Jan 2009
Posts: 6,521
Likes: 11
From: Greenwood, SC
I average 9-13 towing. It's not the weight or weight of a trailer that sucks fuel, it's the wind resistance or your trailer. With a flatbed, regardless of weight, I'd expect wind resistance to be less than an enclosed trailer or camper so I'd expect 11-13.
Weight does burn fuel but not as much as wind resistance does.
Unloaded, a SRW truck should average 15-18 around town, 18 on long highway runs.
A drw truck has higher rear end gear ratios and generally gets 13-16 around town.
All depends on how you drive, your climate, fuel quality, and idle time.
These modern EPA controlled diesels are much more sensitive to fuel types, climate, and just don't get the 7.3l mileage as a result. Good thing is, they start and run great in severe cold and make huge power compared to the older models. And, they're quiet.
Weight does burn fuel but not as much as wind resistance does.
Unloaded, a SRW truck should average 15-18 around town, 18 on long highway runs.
A drw truck has higher rear end gear ratios and generally gets 13-16 around town.
All depends on how you drive, your climate, fuel quality, and idle time.
These modern EPA controlled diesels are much more sensitive to fuel types, climate, and just don't get the 7.3l mileage as a result. Good thing is, they start and run great in severe cold and make huge power compared to the older models. And, they're quiet.
Posting Guru
Joined: Jul 2013
Posts: 1,726
Likes: 2
From: Connecticut
My SRW no trailer gets around 18, on long hauls with my 8,000 lbs. of trailer at 65 to 70 I get about 16. But if I use the tow mode I get 9.5. Note: Just drove up to Bangor, ME no trailer and averaged 70 to 75 getting 20 mpg.
Lead Driver
Joined: Sep 2006
Posts: 5,665
Likes: 164
From: Cartersville, Ga
With stock tires stock everything: 17-19mpg /towing 10-12 mpg. Average 16
With stock tires tuned and deleted: 19-21 mpg /towing 10-12 mpg. Average 17
With 35's: 16-17 mpg /towing 10-12 mpg. Average 15
With stock tires tuned and deleted: 19-21 mpg /towing 10-12 mpg. Average 17
With 35's: 16-17 mpg /towing 10-12 mpg. Average 15
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Senior User
Joined: Mar 2014
Posts: 443
Likes: 30
I get about 20 on the highway at 73, that is according to the on-board computer, when I hand calculate the trip computer is typically off by about 1 mpg, so a real 19 mpg. On a typical run of 20 gallons, it says I burned 20 and I really burned 21.
Towing a 10,000 lbs boat trailer with a center console with a t-top I get about 10.5 mpg, that is with the windshield removed. i found the windshield was worth about 1 mpg towing.
Towing a 10,000 lbs boat trailer with a center console with a t-top I get about 10.5 mpg, that is with the windshield removed. i found the windshield was worth about 1 mpg towing.
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Laughing Gas
Joined: Jul 2010
Posts: 1,155
Likes: 31
From: Idaho
MPG
Winter Fuel I get around 15-16 Combined. HWY 19 MPG.
Summer Fuel I get about 1-2 MPG increase.
Towing it seems like it gets 10 not matter what I do. I am always in the mountains so I think this is a big negative to MPG.
On the V10
10 MPG normal
Towing 7-8
Summer Fuel I get about 1-2 MPG increase.
Towing it seems like it gets 10 not matter what I do. I am always in the mountains so I think this is a big negative to MPG.
On the V10
10 MPG normal
Towing 7-8
Senior User
Joined: Dec 2012
Posts: 481
Likes: 0
I have only run one tank of fuel through my truck........ The avg was right at 13mpg now while I was leaving the dealer it was a 2 hour drive home on the hwy...... The instant was reading 18.5-19 running 75
Now that I have driven the truck around town The avg is right around 13 I currently only have just under 400 miles so I assume the truck will get better with some more use. I do sit in a bunch of traffic with a few 8-10 miles of 50 mph runs on my way to work. I don't expect the milage to be much better than 15 mpg once it's Broke in.
I am not really concerned with the avg mpg because as I mentioned it was great out on the hwy but the city driving is killing my avg and the fact that the truck has no milage on it.
I would suggest your dad to buy a 6.7 I have never owned a 6.4 but the general consensus is the 6.7 is superior as is with any new model. I cam from a 2012 with a 6.2 so the increase in power is not comparable.
Good luck to your pops!
Now that I have driven the truck around town The avg is right around 13 I currently only have just under 400 miles so I assume the truck will get better with some more use. I do sit in a bunch of traffic with a few 8-10 miles of 50 mph runs on my way to work. I don't expect the milage to be much better than 15 mpg once it's Broke in.
I am not really concerned with the avg mpg because as I mentioned it was great out on the hwy but the city driving is killing my avg and the fact that the truck has no milage on it.
I would suggest your dad to buy a 6.7 I have never owned a 6.4 but the general consensus is the 6.7 is superior as is with any new model. I cam from a 2012 with a 6.2 so the increase in power is not comparable.
Good luck to your pops!
Freshman User
Joined: Jun 2014
Posts: 29
Likes: 0
From: Oregon
My bone stock 2012 F350 SRW 4X4 3.31 RAR gets as follows:
Lows around 10 MPG towing my toy hauler, to highs of 17.5 empty. My overall average over 17,000 miles is 16 MPG (that is total miles driven divided by total gallons used). The information I've provided here is based on hand calculated values.
I use Motorcraft PM22 at every fill up.
Lows around 10 MPG towing my toy hauler, to highs of 17.5 empty. My overall average over 17,000 miles is 16 MPG (that is total miles driven divided by total gallons used). The information I've provided here is based on hand calculated values.
I use Motorcraft PM22 at every fill up.
Lead Driver
Joined: Dec 2013
Posts: 9,762
Likes: 115
I think you got a good idea of what these trucks get. Just don't plan on the 18-20 MPG all the time and anticipate that if you idle a lot and don't pull a lot the numbers will be in the low teens at best. I am right at 11.7 mpg - NOT puling or towing, once a week highway driving, and idling in the morning to get the truck up to temp. And a lot of city driving and running around in 4WD a lot. Roads are ice covered and hilly here.
My 2011 was primarily driven in the warmth of Southern Florida... Not Alaska, which is where I am now.
My 2011 was primarily driven in the warmth of Southern Florida... Not Alaska, which is where I am now.
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