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Mileage has droped

Discussion in 'Gen 3 Prius Fuel Economy' started by barnabas, Apr 12, 2019.

  1. barnabas

    barnabas Junior Member

    Joined:
    Nov 24, 2009
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    Location:
    new hampshire
    Vehicle:
    2010 Prius
    Model:
    III
    Hi all
    I have noticed my winter mileage has dropped. I am the original owner of the 2010 Prius. I now have 84000 on it. I wonder if Florida winter gas has changed. I lost about 3 MPG last year and an additional 4 or 5 this winter. Nothing else has changed. Up until last winter(2017) my normal winter mileage was about 55MPG. Now winter(2018) was about 47MPG. I am not sure if the gas has changed last year and this year or if something else is going on. My 12V battery is good 12.66 V after sitting two days.
    Has anyone else noticed this?

    Thanks in advance
    Barnabas
     
    #1 barnabas, Apr 12, 2019
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,991
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    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    i don't know about gas, but have you cleaned the egr?

    any changes like tires?

    does she get all her regular maintenance?
     
    #2 bisco, Apr 12, 2019
    Danny3xd () and Raytheeagle like this.
  3. Danny3xd ()

    Danny3xd () Member

    Joined:
    Sep 30, 2018
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    Location:
    Connecticut
    Vehicle:
    2010 Prius
    Model:
    Three
    Just to add. I've had great luck and significant MPG gains by lubing the brake pins.

    Really easy to do and there are lots of vids on it. I strongly suggest our forum mate's "Nutz about Boltz" Pleasant to watch, too

    Nutz About Bolts Prius Maintenance Videos | PriusChat

    Even if not significant. It's just good maintenance to keep 'em lubed.
     
    #3 Danny3xd (), Apr 17, 2019
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