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Mpg

Discussion in 'Gen III 2010+ Prius Fuel Economy' started by docjr, Jul 12, 2011.

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  1. docjr

    docjr New Member

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    Location:
    ohio
    Your Vehicle Year:
    2010 Prius
    Model:
    III
    My 2010 is 8 months old and finally past the 5k mile mark. With that said, my mileage has increased from 50 in the winter and before break-in to 70 mpg this summer almost immediately after break-in, and I think I've finally figured out how to drive this car without be too much of a traffic impediment.

    My last tank I actually calculated 61 mpg, the car's computer said 64; I am 200 miles into this tank and the computer sits at just under 70 mpg tonight and it has been floating between 69.0 and 70.5 mpg for the entire 200 miles.

    I won't know the hand calculated mpg for awhile but the computer numbers have me excited. If the battery was a bit larger i think I could do much better. I drive around on a drained battery nearly all the time, only a very short distance on the freeway everyday, the rest is secondary and tertiary roads. Sweet spot is 40 mph.

    I don't know what mods are out there yet, but i would be interested in doing something to hit 100 mpg for a reasonable cost.
  2. bisco

    bisco cookie crumbler

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    Location:
    boston
    Your Vehicle Year:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    good for you! and welcome!
  3. spiderman

    spiderman wretched

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    Model:
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    Welcome aboard... great numbers!
  4. nerfer

    nerfer A young senior member

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    Those are great numbers, but I bet it's due more to the temperatures than the break-in. In my experience, break-in (after the first two tanks, which are learning experiences) only accounted for maybe 2 mpg, whereas weather can be 10 mpg, even more if short trips are involved.
  5. olyprius

    olyprius Member

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    2011 Prius
    Model:
    Three


    Out of curiosity, is it the best idea to aim towards having a drained battery all the time to increase mpg? Congrats on the high mpg numbers!
  6. Teakwood

    Teakwood Member

    Joined:
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    Location:
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    Your Vehicle Year:
    2010 Prius
    Model:
    II


    No it is not. The batteries are Ni-Metal Hydride. Cycling them up and down is OK. They have been used that way on satellites for many years now. Some satellites have been working on-orbit for 20 years.
    To put it mildly, keeping them at a low state of charge ain't gonna help when it comes to battery life.