I have the 04 Lariat Super Cab with the 5.4 engine and the 3.73 limited slip rear end. I am getting 13.2 miles per gallon regardless of the condition, city driving or highway travel. The sticker indicates that the truck is estimated at 14-18 MPG. I’ve never achieved their low end estimate. Are the rest of you getting the same gas mileage? I asked the service rep and she said the numbers on the sticker are just that, an estimate.

 

I HAVE BEEN AVERAGING 14.2 MPG CITY AND HAVE NOT TAKEN ANY HIGHWAY TRIPS YET.I AM SATISFIED WITH A TRUCK THIS HEAVY IT COULD BE WORSE.

 

I'm getting 14.2 in the 4000 miles I've put on it.

 

count yourself lucky. we're lucky to get 10 mpg. under 1000 miles, hope it improves;.
My 34' motorhome gets better mileage!

 

When the motor is new it will not get the best mileage possible. Also if you live in a cold climate then you are now running winter fuel which has different additives (can’t tell you what they are, just know there different for winter) The winter fuel always makes for worse mileage.

My truck is an 01 V6, I average approx. 18 to 19 in the summer. I average approx. 16 – 17 ½ during winter. So that’s about 12% difference. If that was accurate and applied to you in your case then that 13.2 would raise to about 14.8 (on summer fuel), and that is on a new, not yet broken in motor.

So I think your doing just fine to the estimates.

 

same here,12.5mpg with 1100 miles but i also have 2.5 daystar with 33/12.5/17 tires on it. looks good but does not help mpg.:santa:https://www.f150online.com/galleries....cfm?gnum=3597

 

Same here Lariat 5.4 and a 373. 13.4, usually that is. Sometimes a little better sometimes worse. I feel the same, I hope it betters. I now have near 4000 miles right at 1 month new.

 

With now around 2500 miles on my '04, I have still not gotten less than 17.118MPG

 

11.6-11.9mpg with 3500 miles @ about 95% city driving. Lariat SCrew, 5.4, 3.73.

 

'04 FX4 Scab 5.4 litre 3.73 rear axle - I got 12.82 mpg at 614 miles and it went up to 15.28 at 948 miles (that included about 30% steep grade highway miles).

BTW, here at high altitude they oxygenate that fuel in the winter, but I have never noticed a difference in mpg due to it.

 

16.5 for me. Checked it yesterday when I had to scoot over
to Houston and back. Mostly at 75 mph, but there was 100
or so miles of city traffic. 1000 miles on 04 SCab Lariat now.

One thing I noticed. When filling up today it warned 32 miles
to empty, but the fuel gauge itself was not saying empty.
Pretty close to E, but not quite there. Anyway, I put 26 gals
into my 27 gal tank. I'm gonna be paying attention to the
miles to empty warnings now.

And this morning I changed the oil - I like to do it at 1000,
and then every 3000. Not too bad of a job - the plastic oil
filter drip catcher works pretty well.

DanM

 

From the way you phrase it, it sounds as if you're using the display mileage number. If you don't reset this, then it will appear static over a fairly wide range of driving conditions, such that it would appear that your mileage is about the same whether you are city or highway driving. However, this almost can't be possible, especially in winter.

Doing your mileage checks by dividing miles driven by gallons consumed is far more accurate in terms of a moment in time. Also, you may want to do this over an average of three or four tanksful of fuel, so that your number will be more realistic as a long-term average.

My display will show I'm getting 12.5 mpg, but when I do the math it usually comes out higher, usually around 14.5 or 15, and that is mostly open highway driving at 75, high elevation, cold weather.

 

One thing that no one has mentioned, besides all the driving and climate viarables - is driving habits. I don't have the data but how heavy your foot is makes a huge difference. The lighter the foot the better the mileage of course.

For curiosities sake, I might experiment with that. Test the mileage driving with and without a heavy foot. The old addage is to get the best mileage you need to drive like there is an egg between your foot and the accelerator pedal. Normally I have a light foot.

Anyone calculate your mileage both ways?

Actually, I have not even checked my mileage in probably 15 years. Being it's a truck I don't worry about it much. When it runs low I fill it up.

I figure it's gotta get better mileage than my parents 1972 F250 460ci, esp when they had their camper on it. That thing must of gotten about 8 mpg tops.

 

I am never concerned with MPG but I have to say these are some really lame numbers for new trucks. I was somewhat disappointed when my '88 Beater with 190,000 miles got only 14mpg. Only a few years ago it was even better, like 17-18. Why can't these companies get more distance out of a gallon?

 

I've logged 1600 miles so far, and I'm averaging a consistant 14.2. I averaged an incredible 21 mpg on a 40 mile trip with the cruise set at 58 mph. As soon as I hit the freeway and locked it in at 78, the average settled back down to its now typical 14.2 at the end of a 170 mile trip. I'm getting about the same around the city as well.