[tatheo1]

Hello, my wife and I recently purchased an 2015 F150, 3.5 ecoboost with the 3.55 gearing that has 24,ooo miles. We tow our pull behind camper that weighs in at about 5500 lbs. Tows like a dream compared to our old Jeep Commander. But, the gas mileage while towing is a bit disappointing. While getting 21-23 mpg running to and fro, we only get 8-10 mpg while towing. I thought the Ecoboost would do way better than that. Especially with a light trailer like ours and not in the Tennesse mountains or such. Is this typical or is something wrong? We use tow haul and like how the engine/tranny assist in braking and controlling the trailer. But, the low mpg is puzzling.
Any thoughts?
Thanks

 

[Kinguni]

That's about normal. It's not the weight so much as as the aerodynamic drag of the trailer. Things that improve mileage are slowing down, making sure your tires are inflated correctly and often locking out the overdrive gear(s). Keeping the RPM's over 2000 while cruising seems to result in best economy.

 

[snakebitten]

Stand in the back of the truck and hold a 4x4 sheet of plywood up while going 10mph

Then 20

65mph?

I'm kidding of course. You couldn't actually do it. But imagine a sheet of plywood 8' x 10'!!!!!!

As stated above, weight isn't nearly the "drag" on that motor as the resistance to punch a hole in the air. It's really amazing that little motor can do so with that huge parachute back there trying to stop ya.

It's possible to roll down the road in ECO mode if the truck is empty and you are light on the throttle. But anything over 40-50mph with that WALL behind you is BOOST mode. It's pouring coal.

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[mwemaxxowner]

Towing with a gasser, that's about par for the course. However, I think you'd find that as you went heavier (within reason) it wouldn't change a great deal.

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[Bird1]

However, I think you'd find that as you went heavier (within reason) it wouldn't change a great deal.

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Exactly. My horse trailer loaded up will suck more fuel than hauling a tractor or hay, and the horse trailer is about 2500 lbs lighter than my tractor and a trailer.

 

[Justinjs]

Here's what I've found towing various trailers.
12' SA utility trailer: 12-13mpg(loaded or unloaded)
14' DA utility trailer: 11-12mpg(loaded or unloaded)
20' pontoon on a bunk trailer: 9-11mpg
19' Sea Ray closed bow: 15mpg
14' DA dump trailer, top sits level with the box: 13mpg(empty) 10-11mpg(maxed out).
Empty I can get 21mpg up to 26 if I am really careful.

Absolutely has to do with aerodynamics. It's just the nature of the beast. Those turbos don't run for free.

2013 screw w/3.31 open diff.

 

[snakebitten]

Here's what I've found towing various trailers.
12' SA utility trailer: 12-13mpg(loaded or unloaded)
14' DA utility trailer: 11-12mpg(loaded or unloaded)
20' pontoon on a bunk trailer: 9-11mpg
19' Sea Ray closed bow: 15mpg
14' DA dump trailer, top sits level with the box: 13mpg(empty) 10-11mpg(maxed out).
Empty I can get 21mpg up to 26 if I am really careful.

Absolutely has to do with aerodynamics. It's just the nature of the beast. Those turbos don't run for free.

2013 screw w/3.31 open diff.

Love the data!

I agree. It's mostly about punching a hole in the air. That aerodynamic boat you have speakers volumes to the theory.

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[Mitchf150]

There is a reason they call these these things "Ecoboost"... You can have great "Eco" as long as you are not in the "Boost"...

Once in the boost, it's just like feeding a big ol' V8, so there you go..

Good luck!

Mitch

 

[willyfixit]

Hello, my wife and I recently purchased an 2015 F150, 3.5 ecoboost with the 3.55 gearing that has 24,ooo miles. We tow our pull behind camper that weighs in at about 5500 lbs. Tows like a dream compared to our old Jeep Commander. But, the gas mileage while towing is a bit disappointing. While getting 21-23 mpg running to and fro, we only get 8-10 mpg while towing. I thought the Ecoboost would do way better than that. Especially with a light trailer like ours and not in the Tennesse mountains or such. Is this typical or is something wrong? We use tow haul and like how the engine/tranny assist in braking and controlling the trailer. But, the low mpg is puzzling.
Any thoughts?
Thanks

I get about 12 to 15 mpg towing a 23 foot sailboat which weighs about 5500 lbs. 2018, F150 with 3.5 and 3.55. Headwind makes the biggest difference. With any tailwind I get 15.

 

[campNride]

With my 25' toyhauler at around 8500-9000lb I get 5-7mpg depending on where I go but I do live in Colorado and have several 6% grades up to camp.

 

[mass-hole]

9-10 is normal for my truck towing my 5500 lb trailer. As long as its open road i am usially doing 70mph. I have seen as low as 7 towing into a headwind.

 

[Btomlinson]

With my 25' toyhauler at around 8500-9000lb I get 5-7mpg depending on where I go but I do live in Colorado and have several 6% grades up to camp.

What model ?


-Brian

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[N4HHE]

Boo hoo hoo.
My 6.4L Powerstroke only got 7.5-8 MPG with a 7000 pound TT at 70 MPH. Or 11-12 MPG at 60 MPH.

Few mention the speeds one is towing. It makes a huge difference in MPG.

 

[TOWMA8R]

Boo hoo hoo.
My 6.4L Powerstroke only got 7.5-8 MPG with a 7000 pound TT at 70 MPH. Or 11-12 MPG at 60 MPH.

Few mention the speeds one is towing. It makes a huge difference in MPG.

Speed for sure plays a major roll, agreed...... I have had diesels, v8, v6 (eco) and towed similar weight and tralers with all.

Seems the best ever with any platform was a diesel at 11-12 mpg's.... so the eco is similar.....

 

[campNride]

What model ?


-Brian

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I have the Attitude FS25