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Stuck at 47.0 MPG

Discussion in 'Gen 2 Prius Fuel Economy' started by roryjr, Nov 28, 2007.

  1. roryjr

    roryjr Member

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    After engine break in, we stayed around 48.5 to sometimes 50. It got stuck at 47.1 and about 2 weeks ago, went to 47.0. At the last oil change, I stressed my desire for 3.5 quarts and finally got it (I'm not always there as my wife drives it during the week). The 5 minute bars seem to be better, but the average does not change.

    Is it a lifetime average? We are only at around 20k miles.
     
    #1 roryjr, Nov 28, 2007
  2. paprius4030

    paprius4030 My first Prius

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    WElcome to cold weather:-(
     
    #2 paprius4030, Nov 28, 2007
  3. Proco

    Proco Senior Member

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    It sounds like it's your lifetime average that's being displayed. I don't know if the '07 MPG display automatically resets after a fill up or not, but it sounds like it doesn't. The next time you fill up you could try resetting the MPG on the consumption display.
     
    #3 Proco, Nov 28, 2007
  4. firepa63

    firepa63 Former Prius Owner

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    The higher the mileage the higher or lower the MPG has to be to have an impact on the lifetime average. I reset my MPG at each fill-up and maintain my lifetime average on a spread sheet. I like to know what MPG I'm getting with each tank. If the mileage is out of the norm for a tank, I can start looking for reasons why, like low tire pressure, oil overfill, etc. I would never see that if I didn't do a reset.

    Cold weather will definitely reduce your mileage.
     
    #4 firepa63, Nov 28, 2007
  5. efusco

    efusco Moderator Emeritus
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    If you want to see individual tank average you need to touch the 'reset' button after each fill up. On the '06+ Prius the display is an average since the last reset...or lifetime if you never hit reset. On the '04-'05 the MPG automatically reset at each fill up.
    Personally I'd prefer if it showed both...lifetime and an auto reset tank average.
     
    #5 efusco, Nov 28, 2007
  6. roryjr

    roryjr Member

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    Thanks guys. I'll try that reset thing.
     
    #6 roryjr, Nov 28, 2007
  7. a priori

    a priori Canonus Curiosus

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    <div class='quotetop'>QUOTE(Proco @ Nov 28 2007, 08:23 AM) [snapback]545145[/snapback]</div>
    I believe my '07 resets after a fill up -- but only after having turned off the car. It has been some time now since I've encountered the issue, because I now leave it in Ready mode when filling the tank. In doing this I find that I have to manually reset or the MPG remains from the prior tank. I also save on some fuel, because the car doesn't force an ICE run as happens during a normal Start.
     
    #7 a priori, Nov 28, 2007
  8. roryjr

    roryjr Member

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    That's it! We just leave it on when refueling. The motor is not running so we don't turn the car off.

    Thanks.
     
    #8 roryjr, Nov 28, 2007
  9. jhall

    jhall New Member

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    <div class='quotetop'>QUOTE(roryjr @ Nov 28 2007, 11:10 AM) [snapback]545303[/snapback]</div>
    Glad you got it working. I am not usually one to nag people, but I would recommend turning your car off while refueling. If your battery is low or your motor needs to warm up, the motor could start.
     
    #9 jhall, Nov 28, 2007
  10. firepa63

    firepa63 Former Prius Owner

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    The 06 thru 08 resets the miles per tank, but not the MPG display. The 04 - 05 resets both the miles and MPG at each fill-up.

    Turn your car OFF when fueling!!!
     
    #10 firepa63, Nov 28, 2007
  11. Irunnoft

    Irunnoft New Member

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    <div class='quotetop'>QUOTE(firepa63 @ Nov 28 2007, 03:29 PM) [snapback]545358[/snapback]</div>

    And one sure fire way to turn your Prius off is to tell it that it looks like an H2! :lol:
     
    #11 Irunnoft, Nov 29, 2007
  12. Irunnoft

    Irunnoft New Member

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    <div class='quotetop'>QUOTE(firepa63 @ Nov 28 2007, 03:29 PM) [snapback]545358[/snapback]</div>

    And one sure fire way to turn your Prius off is to tell it that it looks like an H2! :lol:
     
    #12 Irunnoft, Nov 29, 2007
  13. Atwork

    Atwork New Member

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    <div class='quotetop'>QUOTE(Proco @ Nov 28 2007, 08:23 AM) [snapback]545145[/snapback]</div>
    Mine is an 07 and it does automatically reset after filling up.
     
    #13 Atwork, Nov 29, 2007
  14. a priori

    a priori Canonus Curiosus

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    <div class='quotetop'>QUOTE(jhall @ Nov 28 2007, 03:50 PM) [snapback]545325[/snapback]</div>
    There was an interesting (and long) thread recently about this question. I think the title of thread was "Car Off at the Pump" -- anyway, here's a link to get you there. There certainly are different minds on this question. In reality, you'll also need to conider the law of the State in which you drive.
     
    #14 a priori, Nov 29, 2007
  15. efusco

    efusco Moderator Emeritus
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    <div class='quotetop'>QUOTE(Atwork @ Nov 29 2007, 02:18 PM) [snapback]545800[/snapback]</div>
    It will reset the miles on the tank to zero automatically, but it does NOT reset the mpg to zero unless you push the reset button. Only the '04 and '05 reset both.
     
    #15 efusco, Nov 29, 2007
  16. a priori

    a priori Canonus Curiosus

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    <div class='quotetop'>QUOTE(efusco @ Nov 29 2007, 05:32 PM) [snapback]545837[/snapback]</div>
    Hmm. As I said before, it has been awhile since I shut the car off while getting gas, but my recollection was that the MPG also reset on my 2007 after a fill. Could be wrong, of course! If the car remains on, then only the miles will reset automatically. I then reset the MPG by pushing the button. Tough work, but somebody's gotta do it.
     
    #16 a priori, Nov 29, 2007
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