1. Attachments are working again! Check out this thread for more details and to report any other bugs.

After Dealer visit, loss of mileage

Discussion in 'Gen 3 Prius Fuel Economy' started by tach18k, Mar 23, 2012.

  1. tach18k

    tach18k Member

    Joined:
    Feb 21, 2012
    406
    38
    1
    Location:
    SoCal Beach Area
    Vehicle:
    Other Hybrid
    I have 2600 miles on my 2012 mdl II. A month old. I have been averaging 47.5mpg since day one based on miles driven and gas put back in tank at each fill up. I have used only Mobil bottom 87 oct gas.Last fill up got me 48.2, very nice, then I filled up with mid grade 89 oct as it was all I could get then. The next day I was in the dealer for my 1000 mile checkup. when I got out my battery was down to 25%, okay no biggie. Then from there on out I notice my mpg changed alot. The comps used to read 49.1-50.1. Now it reads 42.2-44.1. I drive the same way and my 85 mile round trip to work hasnt changed. My first fill up since the dealer, got me 45.0 mpg. wow a big drop off.
    Now then, did the dealer change some setting or did the change in gas from 87 to 89 oct gas cause the decrease?
     
    #1 tach18k, Mar 23, 2012
  2. JimboPalmer

    JimboPalmer Tsar of all the Rushers

    Joined:
    Apr 14, 2009
    12,470
    6,862
    2
    Location:
    Greenwood MS USA
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    Did they add oil? Too much engine oil is not good for mileage. You may wish to check to see if it is over the 'full' line'. Did they adjust the Tire Pressure? You want at least 38F/35R

    Other than that, weather, tire pressure, traffic, and slope all change your mileage. Your Mileage May Vary.
     
    #2 JimboPalmer, Mar 23, 2012
  3. Gary Otto

    Gary Otto Member

    Joined:
    Jul 17, 2011
    123
    19
    0
    Location:
    Silver Springs, FL
    Vehicle:
    2011 Prius
    Model:
    Four
    I have aired my tires up to the 40s...only to have the dealer let about 10psi out during service. maybe that's it.
     
    #3 Gary Otto, Mar 23, 2012
    1 person likes this.
  4. tach18k

    tach18k Member

    Joined:
    Feb 21, 2012
    406
    38
    1
    Location:
    SoCal Beach Area
    Vehicle:
    Other Hybrid
    Havent checked the tires or oil, but I will. Thanks
     
    #4 tach18k, Mar 23, 2012
  5. spiderman

    spiderman wretched

    Joined:
    Jul 5, 2009
    7,543
    1,558
    0
    Location:
    Alaska
    Vehicle:
    2010 Prius
    Model:
    II
    With the SOC so low, they probably left it sitting, On, for a period of time running down the battery and having it idle.
     
    #5 spiderman, Mar 23, 2012
(You must log in or sign up to post here.)