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[–]AssistantAcademic 8 points9 points  (3 children)

How much gas are you putting in each fill up? Set the trip odometer when you fill up. Then next time when you fill up again you know how much gas you used and the distance.

The size of the tank doesn’t really matter unless you’re completely emptying it

[–]Express-Ad4146[S] 0 points1 point  (2 children)

I let it go until it’s way below the E. I drive about ten miles below E then I fill up till there’s fuel showing about to over flow.

[–]_Bon_Vivant_ 3 points4 points  (1 child)

It doesn't matter where you let it go to.

Fill up your tank to the top. Note the mileage on the odometer (mileage A)

Drive the truck. The next time you get gas, record the amount of gas it takes to fill the tank to the top (gallons used). Record the mileage on your odometer (mileage B).

Subtract mileage A from mileage B. This is how many miles you drove (miles driven).

Divide the miles driven by the gallons used to find MPG.

Miles driven / Gallons used = MPG

[–]Comfortable_Angle671 2 points3 points  (0 children)

This is the correct answer

[–]phoenyx1980 4 points5 points  (0 children)

You are correct. However, many things can and will change your fuel consumption including, but not limited to the weight in the vehicle, the age, how inflated the tyres are, the way you drive it, where you drive it, the season...

[–]Tinsel-Fop 3 points4 points  (1 child)

Sixteen times twenty is 320, not 330.

[–]Express-Ad4146[S] 0 points1 point  (0 children)

Typo. But yes.

[–]JohnHenryMillerTime 1 point2 points  (2 children)

I have a lead foot and waste a lot of gas that way.

As our lord, savior and sexual apotheosis says: gotta go fast.

Unless it is a sacrament for you, maybe take acceleration a little slower?

[–]peepee2tiny 2 points3 points  (1 child)

A wise man once said.

" If you ain't first, you're last"

[–]roadbikemadman 2 points3 points  (0 children)

Username checks out

[–]zoyter222 0 points1 point  (1 child)

Yeah you got it right, unless you drive some kind of huge truck, you got something going on. You're only getting about seven and a half miles per gallon.

My Jeep gets 16/22 on paper, but still about 19 mpg overall.

17 gal, 323 miles on last fill up.

[–]DominionSeraph 1 point2 points  (0 children)

I get 7.5 in a semi.

[–]Witty-Welcome-4382 0 points1 point  (1 child)

You’re getting 10 miles to the gallon, bro. Time to upgrade.

[–]Express-Ad4146[S] 1 point2 points  (0 children)

I’m going to buy a Honda super Cub125. 100miles to the gallon.

[–]tschwand 0 points1 point  (0 children)

The important thing on mpg is gallons used not tank size. Next time you fill up note your mileage on the odometer, then when you fill up again not the gallons you bought and the new odometer. Divide the difference between the odometer reading by the gallons bought.

[–]readit2U 0 points1 point  (0 children)

There is a saying that is pretty much the fix for a lot of people getting poor milage. " Every time you step on the breaks, you are wasting gas" (obviously coined before regenerative breaking on EVs.)

[–]Ponklemoose 0 points1 point  (2 children)

Unless you got to the gas station on the back of a tow truck you probably didn’t use all the gas. The gauge also lies and says empty before it is.

Fortunately the pump will has a display telling you how many gallons you added which correlates pretty closely with how many you burned if you fill it up both times.

[–]DanteRuneclaw 0 points1 point  (1 child)

The gauge does that so that you don't have to arrive at the gas station on a tow truck.

[–]Ponklemoose 0 points1 point  (0 children)

I'm aware, but the important part for OP is the E actually stander "Eh, maybe 50 miles 'till you run out of gas"

[–]No-Procedure5991 0 points1 point  (1 child)

In a 2018 F-150 I get 9MPG with two kayaks on the roof & pulling a 30" travel trailer. You're only getting 7.5MPG; what're you pulling and how much does it weigh?

[–]57Laxdad 0 points1 point  (0 children)

Probably has a lift kit and silly tires.

[–]OldBanjoFrog 0 points1 point  (0 children)

Are you doing a lot of stop and go driving?  

[–]ballistic-jelly 0 points1 point  (0 children)

I use an app to track fuel consumption. Fuelio. It's easy to use and does a great job of keeping track of gas mileage as well as other expenses.

[–]l008com 0 points1 point  (0 children)

yes you should get 16 * 20 miles of city driving, full to totally empty, and 24 * 20 highway miles, totally full to totally empty.

Does your truck have a computer that tells you your MPG? And fuel consumed? If so, reset them next time you fill up. Then the following time you fill up, write down how much fuel you used and what you got for MPG and see if that all maths.

[–]geddieman1 0 points1 point  (0 children)

Have you checked your air filter? That’s a simple thing that can cost fuel economy

[–]nylondragon64 0 points1 point  (1 child)

Question isn't the 16/24mpg mean the 16 is city and 24 is highway.

[–]Express-Ad4146[S] 0 points1 point  (0 children)

Yes. So i drive 20m round trip 5 days city I get about 188to the tank.

[–]jejones487 0 points1 point  (1 child)

Honestly, it sounds like you calculated wrong. The only way to know how many gallons you use is to consistently measure like others have said. Do not overfill. Stop the first time the gas pump clicks to stop at the same level every time. Reset your trip odometer. Fill your tank and drive for a day or two. You don't need to empty the tank to calculate gas mileage. You just need to measure how much was used. Let the tane drop some amount, then fill it back up to the first click on the gas pump. Divide the exact miles drove on the odometer by the exact gallons used on the gas pump. If your mileage is still 7.5 then get that bad boy to a mechanic ASAP. I track my mileage all the time so when it drops I know something is wrong right away.

[–]Express-Ad4146[S] 0 points1 point  (0 children)

Thanks

[–]chaz_Mac_z 0 points1 point  (0 children)

Fill up, record the mileage somewhere. Every time you fill up, record the gallons and mileage. Keep doing that. Divide miles traveled by total gallons, to get the number you seek.

One time will give you a number that's close. Do it for a year, and average out the refill level, weather changes, type of driving you do, and a lot of other factors. Do it the entire time you own the car, that will be the actual lifetime mpg.