Hey guys, I know we talk about this daily, but I have gone through the first two tanks on my 04 F150 I just bought, and my mpg is 11.2 and has been pretty much both times...

I have a 3.55 in it and it is mostly city with a daily ten minute run across the highway..

And the thing is, Im easy on the throttle, dont drive hard, try to drive as even as possible... but still 11.2

If that is all Im going to get, I can live with it, I know it isn't a Honda or something, but I was expecting more like 15 instead of 11.

I think Im going to mash the peddle this tank and see how it is... way more fun to drive that way and I can't imagine it being too much worse than 11mpg...

 

id get it looked at , perhaps reflashed. i do all city driving . i hit the gas every once in a while with a 5.4 i get 13 MPG and if im easy on it i get 13.5 so id say something is wrong.

 

Thats about what I get, roughly 290 miles to a tank.

 

that seems REALLY low I have 4.6 with a leveling kit, glass pack exhaust, and 33" mudders. I am always on the pedal and I get a little under 11.

EDIT: I get a little under 250, how many miles do you have on your truck

 

I have the 5.4L and average 330 miles per tank...right at 12 MPG.

 

I have 12,000 km (7,500 miles) on it...

I get 615km per tank... but how big are your tanks? Mine is like 130 litres or something (35+ gallons).

Im american and living in canada, I struggle with this metric stuff...

 

Let the motor break in for crying out loud. you havent even broken 1k miles from what i hear. it will get better but not alot. I have 03 screw 4.6 with K&N and two intake mods, SISO bullet muffler and i can almost get 13 after around 30k miles
-Patrick

 

x2

 

Sorry, what I said was misleading, it is my first two tanks, but has 7,500 miles on it, I bought it used...

 

14s usually 50/50 highway/city... 05 SCrew 4x4 4.6

 

Well still you still need to get better at driving it. Like i know on hills exactly how much to let off the gas so it doesnt have to down shift, and when accelerating i know how much i can give so it doesnt down shift, it just takes so time to really learn you truck.
And i believe that ford puts a 10k cap on the truck that the PCM doesnt allow full motor hp production until after you "break it in" and cross the 10k mark, but i could be wrong on the 04+ models.
-Patrick

 

Wonder if there is a way to get confirmation on this...

 

woke up at around 6000 miles.

Best I did was 21mpg doing a 45-55mph run on flat ground, on a 3-hour ride.

Usually around 15-17.

Keep the revs below 2 grand, that will be the best thing you can do. Of course, empty out the bed of junk and keep the tires up to pressure.

 

I cracked 10,000 miles last weekend and only mod is K&N drop in filter. Been getting ~11mpg city driving 'nice' for over a year (since new). Tank is 26gal. Much better mileage on highway, however.

 

At high altitude, lots of hills, heavy traffic, bad roads, California blend gas, winter mix two thirds local driving my worst tank was 15.9. Most tanks are 17.0-17.4. Going to Vegas I get 21 at 65-75.

However, I have a light weight tonneau (Aluminum Fold-a-Cover) improved intake, Cat back, tuner. Regular cab.
ScanGauge to monitor and learn the best driving techniques.

And I've been driving for 40 years, which also helps.

I don't waste gas accelerating but am careful to get the most for my throttle. That means I am seldom the fastest from the light, never the slowest.
I let my foot off the gas much earlier than most as these trucks 'coast' great.

If the truck was slightly lower geared I feel it would get better around town mileage. It is really optimized for highway speeds, flat ground. There it is nothing less than fantastic.
Chris