most guys claiming to get 21,22,23 mpg have 2wd trucks and most are not supercrews. your truck is much heavier and 4wd which makes for a difference in mpg. my 2010 with a 4.6 gets 12 to 14 city 15 to 16 highway but thats with a 6" lift and 35" tires,

 

Griff - all of us 5.0 guys with 4x4 are getting 20-22 highway, if you go easy on the pedal. How can we ask for more on highway than that

 

Raise whatever flag you want, but 22 is easily possible. Level highway at 60mph no air.

That's with 2wd 5.0 3.55LS.

In the city, not nearly as good. I have to drive like an old man to get 15mpg.

Also, I find the dash mpg display really accurate. I keep it set to "Last 30 minutes". I don't know if that helps with accuracy.

One funny thing though, is that my trip odo (which I always reset at fuel stops) always reads the same as the fuel economy display which is only supposed to be for the last 30 minutes. This doesn't make sense, it should read avg economy since it was reset, not just for the last half hour. If I'm doing mixed driving, but my last hour was highway, then the trip meter should show +/- 18 and the fuel economy gauge should show +/- 21 for the last 30 minutes.

Check out fuelly.com if you want real world numbers.

 

ok ok, I'll take my flag down. even if your truck is set up nothing like mine. fwiw. I really dont care if my truck gets 10 mpg because i love it. I'm not as concerned about mileage as some people are and id thought id just offer my own personal data to those interested. Its not flat where i live and i dont drive 60 on the highway. its either 80 on the highway or stop and go in town.

Didn't mean to **** anyone off and from what i see no one gets the same mileage anyway.

 

i think the last 30 minutes is just for your graph, not your overall average mpg. at least that's how i've noticed mine to be. i'm getting 16-16.5 city right now at 1100 miles. (3.73 4x4 5.0) the read out has been w/in .2 of my actual calculated for my first 2 tanks.

 

2011 f150 supercab. 4x4 im getting 18 per tank. 22hwy

 

Knoxville to Cincinnati and back 19.6 mpg at 65-72 mph-it was really windy, my city mileage is about 16. All things considered I love this truck, pulls my boat with ease, looks good rides nice and is comfy. The stereo is weak!!!!!! and it is loud in rain. After driving a chevy this is a major upgrade.

 

So far my avg are a low of 14.14 and a high of 16.31 with an overall average of 14.92
So far my driving has been all city stop and go. This is about 1000 miles worth of data. 350 of which has been pulling a 2500lbs mowing trailer all city and all really short (less than 1 mile trips between yards). So that really pulls the average down.
The 14.14 fillup was pulling 6000lbs of hay and trailer for 100 miles at 60 mph with 20mph or so head wind.
Truck has 2000 miles now the first 1000 miles was a highway trip breaking it in really good so I only averaged around 18 mpg. I think I could pull 22 mpg on the same trip driving it normal.

 

My truck is about to roll 12k miles. Maybe its just me, but it always gets 16 mpg. It is what it is, and I don't expect to get any better.

 

getting 16-16.5 city with my supercab fx4. no highway trips yet.

 

Is yours a Flex fuel? The best iv got is 14

 

me? yea it's flex fuel but that shouldn't matter at all.

 

4/29/11
Shell 87 octane (E10)
4,367.8 total miles
385.8 miles driven
19.044 gals serviced (no top off)
20.0 avg comp reading
20.258 mpg

75% Highway/25% City driving

 

Almost 2000k on mine, daily commute is 43miles -100 highway.
Consistently avg 22, hit 23 today. I know this truck will continue to get low 20's on road trips with a stock setup. Upgrading to wheels/tires in about month or so, will see how much it effects it. really pleased with this truck

 

2000k? Wow! Surely Ford wants to hear of a 2 million mile truck!