It's easy to knock down MPG in prius

Discussion in 'Gen 3 Prius Fuel Economy' started by Former Member 68813, Aug 30, 2014.

  1. Former Member 68813

    Former Member 68813 Senior Member

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    I went to dealership to have oil change and new tires, 5.5 miles one way trip, 53 MPG.
    Came back same way, 43 MPG.

    What changed:
    New tires, same size, supposedly LRR (continental purecontact ecoplus), but not as good as the stock and worn out Ecopias, of course.
    Dealer pumped the tires to 36 PSI, I had 44/42 PSI.
    New oil, 0W20 according to the receipt.
    The HV was only 3 bars, they "idled" it a lot.
     
    #1 Former Member 68813, Aug 30, 2014
  2. fuzzy1

    fuzzy1 Senior Member

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    Is there an elevation change between your home and the shop? That would add to the discrepancy.
     
    #2 fuzzy1, Aug 30, 2014
  3. Okinawa

    Okinawa Senior Member

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    The number of red lights you have to stop at makes a difference as well. Real MPG killers.
     
    #3 Okinawa, Aug 30, 2014
  4. Former Member 68813

    Former Member 68813 Senior Member

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    Right, I didn't control for that.
     
    #4 Former Member 68813, Aug 30, 2014
  5. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Actually I thought the OP was sharing how anytime you take a Prius into a Toyota shop, regardless of the mileage going in, the car will be returned with the mileage wiped out. I don't think the service staff even notices it.

    Bob Wilson
     
    #5 bwilson4web, Aug 31, 2014
  6. edwardob

    edwardob Member

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    new tyres will take couple weeks to break in properly.... might will be reduced
     
    #6 edwardob, Sep 10, 2014
  7. bisco

    bisco cookie crumbler

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    you really need to compare a few tankfuls to your prior lifetime average.
     
    #7 bisco, Sep 10, 2014
  8. kenichols29

    kenichols29 Active Member

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    After you break in those new tires your mileage should normalize. I am curious how those tires compare to the stock ecopias. Is there more or less road noise?
     
    #8 kenichols29, Sep 10, 2014
  9. Mendel Leisk

    Mendel Leisk Senior Member

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    Lots of idling, plus maybe a leadfoot test drive will do it. Plus the tires, plus the pressure, plus...
     
    #9 Mendel Leisk, Sep 10, 2014
  10. lester williams

    lester williams Member

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    Please keep us updated on the Continental Eco-Pure tires, if things level out, as G/F will need a set of tires by late fall. We have monsoon season in Jan. and Feb., these would be good here.. thanks
     
    #10 lester williams, Sep 10, 2014
  11. John Bergendahl

    John Bergendahl Member

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    Lester what part of MS are you in?
     
    #11 John Bergendahl, Sep 11, 2014
  12. lester williams

    lester williams Member

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    South/central,,, between Mendenhall and Magee-- in the woods.
     
    #12 lester williams, Sep 11, 2014
  13. KK6PD

    KK6PD _ . _ . / _ _ . _

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    Get those tires back up to 42/40 or more... that's a big bite there....
     
    #13 KK6PD, Sep 11, 2014
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