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  1. #11

    Default use more than 1 fillup

    Gas stations vary greatly in when the filler turns off, in other words some pumps let you put in more fuel than others which makes your calculation inaccurate.

    I would recommend using more than one fillup to calculate gas mileage. If you use 5 or more fillups (and corresponding miles) you get much better accuracy. Here is a link to example calculation:

    Good luck.

  2. #12


    And after you get you MPG calculated you can figure out how much you're spending for every mile you drive!

    Price per gallon / your mpg = how much you spend for every mile you drive!

    ex: My truck averages 14mpg. Price per gallon here currently is 3.39.

    3.39/14= .24

    So I spend roughly $.25 for every mile driven. Helps to plan for road trips
    Charles 02 z71 Cladded Avy
    Mods: eBay k&n Intake, highflow magnaflow cats & y pipe, 6" FabTech lift, 35" Pro Comps, Superchips #2715, SnugTop, 4.56's, MOOG front end
    Wishes: LQ4 + a beefed up 4L60E

  3. #13

    Join Date
    Jun 2006
    River Ridge Louisiana-4 miles W of New Orleans-didn't flood-water stopped 800 yards away.


    Last fillup my 1998 Suburban got GREAT city mpg
    411 miles/26.5 gallon=15.5mpg
    I drive exactly 6.2 miles one way to work the last 3 months-city but not too many stops
    most importantly my wife hasn't been killing my mpg with her 1-2 mile trips and long waits-motor on-at the bank etc.
    I motor on pulse and glide-but that is about it for mpg trickery.
    GM 1/2 tons have transmissions that glide in D as if they are in N when you lift off the gas-makes them great for mild hypermiling.
    Once I get in better financial shape I might upgrade to a 2004 5.3-to get better brakes and better mpg-and fewer miles-222,000 now.
    Yeah GM trucks can get pretty surprising city and hy mpg
    1998 suburban-
    1/2 ton

    199500 miles

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