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2017 from 52mpg to 43mpg

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by Wraiththe, Jul 3, 2023.

  1. Wraiththe

    Wraiththe Member

    Joined:
    Apr 4, 2017
    258
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    0
    Location:
    Charlotte NC
    Vehicle:
    2017 Prius
    Model:
    IV
    2017 prius... 123k miles. Recently the mpg dropped almost 10mpg. Only things i have had done were replacing sparkplugs with the correct toyota ones and draining and refilling both coolants. No warning lights. Alignment is not perfect... could that be responsible? Any tips on what to check?
     
    #1 Wraiththe, Jul 3, 2023
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    108,908
    49,490
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    oem plugs from a dealer?

    dragging brake maybe?
     
    #2 bisco, Jul 3, 2023
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