Hello all
The FIT finally hit 38MPG today...stock motor, 87 octane, AT, and I know it could do better.

The only way I've found able to achieve this so far is by overfilling at the pump and running it till its pretty much dry.

 

And nicely (I mean World class) documenting it.

I wish I had done that with the 51mpg I saw last month.

 

Good job! I should take pictures at the pump, too - that's cool.

Just wait and see how high you can keep going with your fuel economy... You'll be amazed.

 

Not to bust your bubble but isn't it suppose to be 34.959
379/10.841
and is that hwy or mix city/hwy?

None the less that's more than I'd ever gotten.

 

The only problem with that is its only a quick glimpse of your mpg for that tank, for a true mpg rating you have to take a log of all the gas used and mileage over a couple months or a year to get a true number

 

This is 98% highway

been doing this exact same thing since I bought the car...never got this high.
Had a fujita intake was getting 34-35mpg
It also depends on the highway I take to get to work.
I-95 would be best since its nice and flat...
but for this tank I took the Merrit PKWK(RT 15) exlusivly which is very hilly.

 

NO
because the 10.841 is the new tank of gas I filled today.

 

He's right about the mileage. That's how you calculate your mileage if it was full when you started the 379 mile journey.

 

NOT!
like i said above I do fill up but I overfill which is not consistent

 

Then you have no way to know your real mileage. You'll have to average several fill ups to get a true amount because you got basically 35 mpg out of that tank. If you put less in the time before, then you got more...no way to tell.

 

yea I defenitly agree with you on that....but it was nice to finally see the guage read something like it did

 

I can appreciate that

 

So in summary:
"but it was nice to finally see the guage read something like it did"
and you report 38mpg

So how did you figure that 38mpg?

I need to see if the way I have done it for 35years is wrong.
It would be 34.96 using that method.

 

Yeah the correct computation is 379/you're fill(not overfilling). So the 38mpg you reported is wrong

 

to get it consistant, use the same pump, with your car facing the same direction. no two pumps are the same. heck, even using the same pump you could be off on your mileage.

nice numbers though. iirc, it is bad for your car to run the gas that low.

 

That's kind of true. All modern cars have in tank fuel pumps that count on being submerged in fuel for heat dissapation. That being said, fuel pumps aren't that expensive so, if you don't mind them lasting 100,000 miles instead of 200,000 miles, who cares.

 

Best i got was about 35mpg, 95%freeway up to tahoe then sf in the same tank of gas, about 400miles untill totaly empty


11.491 to top it off, 40psi in the tires and no a/c heater or defroster at about 70mph

 

Not to be an ASS but 11.491 what? The tank is 10.8gallons which means you got ripped at the gas station.

FYI: My wifes 08 CRV has the luxury of displaying your instant average mpg and how many miles you have left in the tank at that moment in time.............so, for shits and giggles I always calculate the mpg and compare at every fill up, if I am with her. So, the calculation I use is the the # of miles driven/ gallons to fill up tank = average mpg. She fills up at different gas stations(one or many variable(s) depending on how you look at it) and she fills up at different times of the day(another, temperature, variable). Well, I have calculated as far off as 0.8 mpg below the display value and as far off as 0.3mpg above the display value.

So, one can conclude that the simple miles driven/gallons filled will give you a very good estimate of the "true" average mpg. This is assuming the display is accurate and precise. I am assuming it is because again I am assuming the numbers are calculated by the amount of fuel that is sprayed per injector and the car is probably programed that a full tank = X gallons.

 

My Explorer and all other Fords are referred to as the lie-o-meter. My display averages almost 2mpg higher than reality.

 

11.491 totaly filled, if you wait for a couple of seconds after the fuel is to the top of the cap it will go back down

Anyone notice on a empty tank it stops filling at about 8 gallons of gas?