How accurate is the dashboard MPG?

Discussion in 'Gen 4 Prius Fuel Economy' started by TKW_NOLA, Sep 16, 2021.

  1. Mendel Leisk

    Mendel Leisk Sand Pounder

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    Yeah Wayne Gerdes (Clean MPG founder) noted the mpg display was accurate, on his pre-production 2016 Prius review car. It was scheduled to be crushed, after journalists were done with it.
     
  2. Kramah313

    Kramah313 Active Member

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    Yep, that’s the exact thing I was thinking of. Indicates they are able to make it accurate if they really desire it to be.
     
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  3. Mendel Leisk

    Mendel Leisk Sand Pounder

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    My spreadsheet, with what, 188 fill ups now, indicates “accurately inaccurate”, specifically:
    relentlessly optimistic, but in a fairly narrow zone, anywhere between 5-10%, with median around 7.5.
     
  4. Zaza 13

    Zaza 13 Junior Member

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    just now my computer stays on 4.2 L/km , but in real with 45.7 Litters I did 1025 km = 4.45
    (i have auris hybrid not prius)
     
  5. Mendel Leisk

    Mendel Leisk Sand Pounder

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    Yeah with me if it’s for example saying 4.5, calculated is invariably 4.8 (liters per 100 km), sometimes 4.9.
     
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