Fuel economy
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Joined: Feb 2016
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Fuel economy
Hi, I recently bought a 2013 F-250 and the fuel economy I was getting without towing was around 14 mpg. I have been towing a 6000 lb load and the dash computer says I should be getting like 9.4 mpg, however, I'm calculating like 7 mpg. I did overfill my fuel tank a couple of times. Could this have caused a leak or damaged something? My 2006 f-250 Powerstroke was getting like 9 mpg and I'm concerned.
Lead Driver
Joined: Dec 2013
Posts: 9,762
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If I am lucky in the winter I get 13.5 MPG unloaded. In the summer 16 with my 2015... Add about 2 mpg for my previous 2011 6.7... I think it's the increased HP/TQ of the 2015 vs. 2011 that is main difference.
LoueyK - I doubt you could mess something up by overfilling a diesel. But checking underneath can't ever hurt to make sure you are not spewing fuel out. It sounds a little low to me. When I had really low MPG unloaded I was stuck in a regen. Only way I knew was because of the distinct smell. Other things to check would be a stuck brake caliper or being stuck in 4WD or even hubs locked can take some MPGs...
LoueyK - I doubt you could mess something up by overfilling a diesel. But checking underneath can't ever hurt to make sure you are not spewing fuel out. It sounds a little low to me. When I had really low MPG unloaded I was stuck in a regen. Only way I knew was because of the distinct smell. Other things to check would be a stuck brake caliper or being stuck in 4WD or even hubs locked can take some MPGs...
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Post Fiend
Joined: Jan 2009
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From: Greenwood, SC
If you can stand it, try driving 50-55 mph for extended periods of time while unloaded.
Make sure your hubs are unlocked (in auto position) and the tires are inflated to t least 70psi. Accelerate as quickly as you can from a stop to 50, then drive with the lightest foot possible. This should get you 16-18mpg with summer fuel, assuming it's non bio blend.
Towing, winter fuel, and any wind will all hurt the mileage and if any of these 3 conditions are present you will see 11 or less easily. I find that winds and trailers are the main fuel enemies. I have a short trailer (approx. 8' tall) and I average 11-12mpg with it. I also have a 10' tall trailer and I average 9 with it.
Make sure your hubs are unlocked (in auto position) and the tires are inflated to t least 70psi. Accelerate as quickly as you can from a stop to 50, then drive with the lightest foot possible. This should get you 16-18mpg with summer fuel, assuming it's non bio blend.
Towing, winter fuel, and any wind will all hurt the mileage and if any of these 3 conditions are present you will see 11 or less easily. I find that winds and trailers are the main fuel enemies. I have a short trailer (approx. 8' tall) and I average 11-12mpg with it. I also have a 10' tall trailer and I average 9 with it.
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Tuned
Joined: Nov 2011
Posts: 473
Likes: 45
From: Berryville, AR
I tow a 16,000 pound fifth wheel camper that has a bridge clearance height of 13'5". I get anywhere between 8 and 10 MPG when towing depending on fuel, wind, terrain, speed, etc. I usually tow at 65 MPH. I've seen my MPG's increase almost 1 MPG after filling up with quality fuel. We just got back from a trip to the east and were bucking a 15MPH head wind through Mississippi. My mileage dropped to 7.4 MPG. 
However, no matter how you slice and dice the data, this is an awesome truck!
However, no matter how you slice and dice the data, this is an awesome truck!
Super Moderator
Joined: Aug 2008
Posts: 37,379
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From: Frederick, MD
I usually get 16-17 unloaded hwy runs.
9-11 towing for the most part. Have gotten up to 12.5 on occasion.
Pretty good for a high profile 5th wheel.
Flatbed stuff is much better, in the 13's pretty consistently.
The weight doesn't make so much the difference for me. It is the profile of the trailer.
9-11 towing for the most part. Have gotten up to 12.5 on occasion.
Pretty good for a high profile 5th wheel.
Flatbed stuff is much better, in the 13's pretty consistently.
The weight doesn't make so much the difference for me. It is the profile of the trailer.
Senior User
Joined: Jan 2013
Posts: 238
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From: Northern New Mexico
Towing a 9000 lb travel trailer usually at 65 mph 11-12 mpg.
Multiple unloaded short trips near home about 17 mpg.
Unloaded road trips at 65 mph 19-20 mpg. My best has been 21.3 mpg.
All mileages are calculated.
Multiple unloaded short trips near home about 17 mpg.
Unloaded road trips at 65 mph 19-20 mpg. My best has been 21.3 mpg.
All mileages are calculated.
Hotshot
Joined: Jul 2005
Posts: 13,834
Likes: 25
From: Middle Tn.
I get 21 mpg in cruise while going off a 6 mile high cliff if I don't touch the throttle on the way down.
Freshman User
Joined: Aug 2015
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Mileage
Hello,
I have a new 2016 F350 cc 4x4 Plat long box with 3900 miles on it.
The mileage numbers quoted are lower that what I have experienced in my truck. At 65 on flat highway , I usually run between 18 and as high as 23mpg on the dash . Strong winds have brought as low as 16.5.
Very happy with the truck and really contemplated going to the 6.2 gas.
Going to Alaska this summer!!!
Thanks
I have a new 2016 F350 cc 4x4 Plat long box with 3900 miles on it.
The mileage numbers quoted are lower that what I have experienced in my truck. At 65 on flat highway , I usually run between 18 and as high as 23mpg on the dash . Strong winds have brought as low as 16.5.
Very happy with the truck and really contemplated going to the 6.2 gas.
Going to Alaska this summer!!!
Thanks