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MPG

Discussion in 'Newbie Forum' started by njgreaseman, Jun 2, 2015.

  1. njgreaseman

    njgreaseman Junior Member

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    I am used to decline in mpg in the winter, but during 50F days recently my performance has dropped from 52 mpg (during 60-70F days) to 46 mpg. 2012 Prius w/ 58,000 miles. Anyone else experiencing this?
     
    #1 njgreaseman, Jun 2, 2015
  2. bisco

    bisco cookie crumbler

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    check your 12v health, tyre pressure and etc. have you done all the required maint.? how is the air filter and oil level?
     
    #2 bisco, Jun 2, 2015
  3. njgreaseman

    njgreaseman Junior Member

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    All ok
     
    #3 njgreaseman, Jun 2, 2015
  4. bisco

    bisco cookie crumbler

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    anything else change? driving patterns and etc.?
     
    #4 bisco, Jun 2, 2015
  5. njgreaseman

    njgreaseman Junior Member

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    No. As a matter of fact the last few weeks my driving cycle has been very similar day to day. I have been primarily doing 16 miles via Garden State Parkway and returning 16 miles, pretty much keeping the indicator in the "Eco" zone and cruising along at about 70 mph.
     
    #5 njgreaseman, Jun 2, 2015
  6. bisco

    bisco cookie crumbler

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    are the last few weeks a different pattern than when you were getting 52? what were your winter mpg's? i assume summer gas formulation has already arrived.
     
    #6 bisco, Jun 2, 2015
  7. njgreaseman

    njgreaseman Junior Member

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    45-47 mpg
     
    #7 njgreaseman, Jun 3, 2015
  8. breakfast

    breakfast Active Member

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    Has it been raining much lately? Rain also has a signifiant effect on MPG
     
    #8 breakfast, Jun 3, 2015
  9. JimN

    JimN Let the games begin!

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    I'd call it a fuelling error if the drop was just on one tank. I see that kind of difference between a month of short hops (392 miles 47.8mpg) and a long trip (258 miles 53.9mpg).

    Sunday's storm with the standing water, slow traffic, and the defroster use would have taken a hit. Since you cleared all the usual suspects I don't have any bright ideas.
     
    #9 JimN, Jun 3, 2015
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