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Onboard Computer?

Discussion in 'Gen 2 Prius Fuel Economy' started by krolls, Oct 11, 2007.

  1. krolls

    krolls New Member

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    How accurate is the in-dash computer when it comes to calculating MPG?

    I am driving from the NH Seacoast out to Cornell University this weekend and taking my parents prius.
     
    #1 krolls, Oct 11, 2007
  2. efusco

    efusco Moderator Emeritus
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    Pretty accurate...within 1-2 % of calculated over the life of the car though there tends to be a lot of variation from tank to tank when you compare calculated to the computer's display...mostly due to the funky tank and gas pump variations in fill level.
     
    #2 efusco, Oct 11, 2007
  3. goulian

    goulian New Member

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    Pretty damn close. I found it only to be off one mpg.
     
    #3 goulian, Oct 13, 2007
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