You may have not started the thread, but it is yet another useless post by you. For towing on the heavy side with a F-150, the 3.5L EB is a great choice. If I weren't going to be towing a 20' flat bed plus Kubota L series tractor up and down hills, I might have saved some $ and went with the 5.0L NA (or maybe even the 2.7L EB especially since it had an extra $300 incentive).

But for some reason you find it necessary to post crap all the time to stir things up...even after many members have tried to help you (not by telling you what to buy, but by giving you information to help you in your decision making).

What have *you* done to help other folks posting on f150forum, except to post crap like you've done? Grow up.

 

I get 17.5 ish, and have 275 60 20 KO2's and a 2" Autospring lift all the way around installed.

 

Just crossed over 1,000 miles with my new F-150 2.7L Ecoboost and I am averaging 20.3 mpg. I have had it as high as 20.4. Beets the hell out of the mpg I was getting in my 2006.

 

get some steel bars put in your doors, the 15 scab did very poorly in crash tests. I just saved your life. ooh might lower your payload though. I know your sensitive about that.

 

I am getting 16.2 with my 5.0

 

Getting about 17-18 in my 2.7 Screw with 22s in 80/20 city to highway driving. It was around 20 with my stock 17s. My commute to work and back is 16 miles, so right around a gallon a day is not bad at all.

 

Zika, if you're referring to the crash bars they are before and after the front tires.

I get 14.5 average with level and 285/65r20 KO2s. Odd thing is that I went from 31.5" to 34.5" tires and my speedometer is only 2 mph slow at 65mph. With the 31.5" tires it was showing 17.5 average. I wonder how much the factory speedometer calibration inflates the mpg everyone is quoting.

 

16.1 with mine.

 

I just turned over 10,000 miles on my 2016 3.5L Ecoboost with 3.31 gears. I'm 17.9 mpg average thus far, calculated manually. Lots of highway miles, with the cruise set at 77-78 mph. It's pretty rare that I don't get 20+ mpg on a trip of 100+ miles with the cruise set at 77-78, and that's winter fuel, and pushing the truck through dense winter air, so I expect that to improve to ~20 mpg once warm weather arrives.


Interestingly, my driving habits haven't changed, but I find that I use more boost with the 3.31 gears vs the 3.55 on my last truck. Dropping from 6th to 5th seems to drop 2-3 lbs of boost at highways speeds, so a 3.55 running 200 more RPM's probably averages 1 lb less of boost on a trip with the cruise set. Seeing the truck use more boost to run at lower RMP's at highways speeds with the 3.31 gears finally makes me understand some of those guys that swear that the best mileage they ever got was out of their old truck with the 4.something gears. Ya, I do believe that, if it's all city miles. Highway miles are a different game, just as towing is a different game.


My city mileage seems to be worse, but my highway mileage seems to be better with my new truck. If I was all city miles, I'd probably have horrible mileage at this point, with the 3.31 gears. They just seem to be less efficient at stop and start traffic. Old one was also an Ecoboost. Also, I've noticed that 3.31 gears seem to cause wind to affect mileage more.


That's all before you even talk about driving habits or location...


So, all that to say that you need a lot more information to answer a question about mileage.

 

3.5 EB 3.55 2015, I'm getting 15.5 - 16.5 avg if I'm cautious, if I drive it like my last Ram Hemi which avg 16-18 hard driving I'm lucky to see above 14. mostly hwy with some stop and go mixed in, 4x4, level, 295/60 toyo AT2's, it wasn't that much better before the mods. i find it really does not do much better on hwy, esp interstate speeds it starts to really fall off every 5mph above 60. They made them lighter but must have jumped off the aerodynamics train. One of my biggest disappointments of the truck, not that it's terrible it just not as advertised and I thought for sure it would do better then a heavy steel truck with a 5.7 v8, that's all.