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Clearing the MPG count or not? What's the difference?

Discussion in 'Gen 2 Prius Technical Discussion' started by Tammy7287, Jul 30, 2008.

  1. Tammy7287

    Tammy7287 Junior Member

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    2012 Prius
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    Four
    About 2 weeks ago I filled up the tank and forgot to manually reset the MPG counter and then noticed that it did it on it's own. For the next week I struggled to get 52 mpg like no other.

    Yesterday I filled up, reset the counter and almost immediately it was showing 55 mpg +. I haven't changed anything as far as driving techniques. The only thing different is that I manually reset the counter instead of the car doing it.

    Why would this be different?
     
    #1 Tammy7287, Jul 30, 2008
  2. doubleg2005

    doubleg2005 Member

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    if you don't clear the consumption screen, it will automatically reset the mileage, but not the average MPG. in the end, you'll get an average mileage for the total miles driven over both (or more) tanks.

    so if i drive 500 miles at 50 mpg, don't reset the consumption screen and drive another 500 miles and it shows 55 mpg, then that means you actually got 60 mpg for the second tank, but over the past 1000 miles you were at 55 mpg.
     
    #2 doubleg2005, Jul 30, 2008
  3. ranchogirl

    ranchogirl New Member

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    I just discovered this today. :)
     
    #3 ranchogirl, Jul 30, 2008
  4. Tammy7287

    Tammy7287 Junior Member

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    Four
    Hmm....good to know. Thanks! :)
     
    #4 Tammy7287, Jul 31, 2008
  5. taggart

    taggart Member

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    Had mine 4 months and didn't know that! Of course, I've only filled up about 7 or 8 times.
     
    #5 taggart, Jul 31, 2008
  6. thepolarcrew

    thepolarcrew Senior Member

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    Location:
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    Vehicle:
    2010 Prius
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    IV
    Mine has not been resetting on its own last three tanks and have done it manually. I think it may be it's because we didn't run it down to 1 pip?
     
    #6 thepolarcrew, Jul 31, 2008
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