I have a 2013 ecoboost Lariat supercrew 6.5 foot bed w/ 3.73 gears 4x4. I bought this to use . on first trip averaged 11.5 to 12 mpg. second trip 200 mile home,pulling a empty 18 foot flatbed trailer 10.5 to 11 mpg. Now I have 1200 mile on truck,pulled our 16 foot camper ,don.t know the weight ,but pulling same trailer with our 06 5.4 averaged 11-12 mpg. With the ecoboost,our milage was 7 to 7.5. These mile figures were using miles to gallons used, vehicle average miles was about the same. Is there something wrong with this truck or am I stuck with this. What mileage are you getting? Thanks

 

Was it the same trailer AND the same trip?

If you were towing in the hills for this recent trip it will kill your MPGs.

Speaking of hills, what elevation are you at? You are supposed to use premium when towing (yes, this is true - read your manual), and I would think the affects of running low octane would be worse at high elevations.

I can average close to 10 MPGs when I tow my 30 foot camper, that weighs around 6K loaded. I have the same gears as you and the ecoboost. But I have more miles.

If I am doing a short trip on flat ground I just run regular gas. I put in the premium when I did a longer trip and was in the hills. I found that my MPGs were better when I ran the premium.

Maybe your issue is that the engine is still in the break-in period?

 

yup same exact trip as the 06, same trailer.same load. first part of the trip is about 85 mi.to next gas stop.eco used close to half tank.15 gal to fill. and yes hills. same trip same load in the 06 5.4 used about 9 gal. I know because my wife gets bored and she always keeps a log.she does this to remind me how much a pound the venison actually costs. Yes your right it is still in break in period.

 

something i have noticed is that with a lot of locations putting 10% ethanol blend in their fuel is that it hurts fuel milage. Coming from ND where they do E10, to OH where they don't my gas milage has jumped 3 mpg in the ecoboost.

 

If you are trying to compare two trips like this, there are a lot of variables:

1. Fuel - octane, fuel provider, summer/winter blend, ethanol content
2. Weather - temp, humidity, wind, barametric pressure
3. Tires - Pressure, brand and tread type
4. Acceleration, speed while towing
5. Trailer condition, axle alignment, tire condition and pressure, weight and balance
6. Traffic conditions
7. Terrain, road surface.

The majority of information I've received from coworkers, friends, and on here indicate the EB will yield better fuel economy towing vs. the 5.4. I personally have the same type of experience, my 2009 5.4 vs. my 2012 EB towing my Jeep (total load 7050lbs) to and from Deadwood, SD:

9.9 vs 10.8
8.3 vs. 10.3
8.5 vs. 10.4
7.6 vs. 10.2
8.0 vs. 10.2

So if your EB is getting lower fuel economy vs. the 5.4, you have a big problem. Especially considering you are comparing a 2006 with 4 speed vs. the 6 speed selectshift.

 

3.73's will hurt you on mileage with these 6 speeds. what gears did your 5.4 have?

 

Thanks for the response,I do understand all the varibles that effect milage as you pointed out. As an x drag racer,i do understand octane and the effects.was towing the same trailer,tire pressure on trailer 50lbs(checked before each trip).trailer alignment is good, have always had very good and even tire wear.This trip to and from are on the same road with both trucks. And as it is,both trucks have the same toyo at2 tire,ran at the same tire pressure.as far as weather,we have made this trip each 1st of October for going on 15 yrs for yearly deer hunt.yes weather and temps have varied but as a good norm, trips start out in the 50s goes to the high 60s-70s and back to 50s at the hunt site. So this trip compares apples to apples about as close as possible. I can see a couple mile variance,but not to where the 06 gets 5 plus mpg better then the eco.Also I am not a heavy foot driver i'm in my 60's retired and all day to get there. I normally drive to get the best mileage,so a bit disappointed seeing the 5.4 doing better then the eco. And just an fyi when I put the toyo AT2 on the 06 running at 45 psi(dealer advised) we averaged better mpg then with the previous tire. Thanks again.

 

Where in OH? I'm in the Cleveland area and everything around here is E10, been that way for years. The only way you can get something other than E10 is to buy E85 or diesel.

 

You aren't supposed to tow with an Ecoboost till it has 1000 miles on it - and it bears repeating that you should use at least 91 octane when towing.

 

Your truck isnt even broke in yet, of course its going to get crappy mileage.. Give it another 5,000 miles then report back

 

western edge of Champaign Co. If they are selling anything E10 or above they are not posting it. I would assume that is a requirement out here still.

 

I have 6000 miles on mine and I am still getting around 12.5mpg. There is a recall that is supposed to fix the mileage a little, but I have not had it done yet. Check Fords Sync website to make sure yours is not due for the same one.

 

What speed are you driving? This is the key to mileage.

That being said my truck gets 9.5-10.3mpg hauling my 9300lb fifth wheel @ 60 mph.

 

Guess my Ecobeast is one of the ones with good mileage right off the bat












Now have 14,000 miles on it and avg 18.5 to 20.5 every tank and sometimes up to 21 mpgs

 

I drive at 70 mph with the cruise set and I try not to touch it . I have about 32 miles of highway commute and another 4 miles of primary and secondary roads per day. I am also pretty easy on the throttle. I also consistently use mid-grade 89 octane.