Really Disappointing 6 MPG towing mileage
Postmaster
Joined: Jul 2015
Posts: 4,392
Likes: 22
From: very South Texas
First YOU HAVE NO MILES on your truck.. and its a 4x4....
I average 9.5 to 10...... 2 wheel drive.... and 140,000 miles...
with a trailer at 11 foot high... plus AC above... and trailer loaded over 9,000 pounds.. total rolling is right at 17,000 pounds.
I do NOT tow over 60... kills the gas mileage.
the truck is an aerodynamic brick and the trailer is worse.
I average 9.5 to 10...... 2 wheel drive.... and 140,000 miles...
with a trailer at 11 foot high... plus AC above... and trailer loaded over 9,000 pounds.. total rolling is right at 17,000 pounds.
I do NOT tow over 60... kills the gas mileage.
the truck is an aerodynamic brick and the trailer is worse.
Senior User
Joined: Jun 2010
Posts: 141
Likes: 0
Man 6 mpg seems awful low to me but I am in the flat lands of south Texas. Another vote for slowing down to get better mpg. I lock out 6th gear and on most loads my truck comfy at 65. That said I just did a fast trip to NM last weekend hauling a crew cab on my G/N. Loaded both ways and keeping speeds near 80 and more on I-10 I was getting 8 and change. Keeping it at 65 gets me to 10 mpg on average and as said, wind plays a big factor.
Freshman User
Joined: Mar 2016
Posts: 41
Likes: 0
Originally Posted by shooter56
My 2016 F250 4x4 with 6.2L and 3.73 gears makes 6.0 mpg towing a 6 x 15' aluminum toy hauler at 70 mph. Toy hauler is 10' high, has tandem axles, and only weighs 3500 lb. All tires are properly inflated, no brake drag, no uneven tire wear. This is in flat country (North Dakota).
Truck has 8500 miles. Empty on highway I get 11.5 mpg with winter gas and 12.5 mpg with summer gas. All numbers are calculated by hand.
I contacted my dealer. His response was since there are no service bulletins on it, there is nothing he can do. Anyone have any suggestions?
Truck has 8500 miles. Empty on highway I get 11.5 mpg with winter gas and 12.5 mpg with summer gas. All numbers are calculated by hand.
I contacted my dealer. His response was since there are no service bulletins on it, there is nothing he can do. Anyone have any suggestions?
Cargo Master
Joined: Jan 2015
Posts: 2,824
Likes: 39
From: Boise
Do you have 3.73 gears?
Elder User
Joined: Apr 2014
Posts: 504
Likes: 3
From: West Texas
lousy gasoline
Run a tank of ethanol free gas thru it and see what you get.
Ethanol-free gas stations in the U.S. and Canada
Ethanol-free gas stations in the U.S. and Canada
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Postmaster
Joined: Aug 2015
Posts: 3,146
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From: Maryville, TN
Originally Posted by gasman6674
I get 10.5 to 11 empty (daily driver) and it drops to 8-8.5 towing (13,000#)
Yes it does have 4.30, I wish it was better but I am happy with it
Yes it does have 4.30, I wish it was better but I am happy with it
Cargo Master
Joined: Jan 2016
Posts: 2,669
Likes: 371
Maybe check some of the silly simple things...Make sure the wheels on truck and trailer all spin freely. Check the air filter for a mouse nest...I've seen them even in daily drivers.
For comparison, my '65 F250 with a 390 always got 7.5mpg at 70mph towing a 10K lb 5th wheel...32 ft long and 11ft high. I usually kept it around 62mph and I got 8mpg. The truck got 12 mph running around empty. I'd hope a new truck grossing less would at least get equal mpg.
For comparison, my '65 F250 with a 390 always got 7.5mpg at 70mph towing a 10K lb 5th wheel...32 ft long and 11ft high. I usually kept it around 62mph and I got 8mpg. The truck got 12 mph running around empty. I'd hope a new truck grossing less would at least get equal mpg.
Freshman User
Joined: Jan 2016
Posts: 49
Likes: 0
That sounds extremely low at 6mpg. Im anywhere between 7.5 & 9 while towing my trailer which is 33ft and a little over 8000lbs.. Mind you i have 22x12 wheels on 33's. Only diffrence I have mine tunned but I dont think it will make that diffrence.
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