Low Mpg after wheel alignment?

Discussion in 'Prime Care, Maintenance and Troubleshooting' started by Eneder772, Nov 22, 2021.

  1. Eneder772

    Eneder772 Junior Member

    Joined:
    Sep 17, 2013
    7
    0
    0
    Location:
    Atlanta, Georgia
    Vehicle:
    2011 Prius
    Model:
    Two
    So i was getting an oil change at a toyota dealership when they showed some really bare spots on my tires and suggested a wheel alignment. so i got one but after I left the dealer my mpg consumption wont go above 40...where before it was 46-48 range. Should I continue to wait to see if it goes back up or should i go back to the dealershio?
     
  2. FuelMiser

    FuelMiser Senior Member

    Joined:
    Jun 29, 2008
    997
    703
    0
    Location:
    Monument, CO
    Vehicle:
    2016 Prius
    Model:
    Touring
    Doubtful an alignment would change MPG. Did they rotate the tires at the same time? If they did, and crossed the tires, then the direction of rotation changed on at least two tires, and this can definitely cause lower MPG. Another factor could be tire pressure, if they lowered it from where you had it set.
     
  3. jerrymildred

    jerrymildred Senior Member

    Joined:
    Oct 28, 2016
    10,044
    12,304
    0
    Location:
    Tampa, FL
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    This would seem most likely. My dealer lowers the pressure to what's on the door post every time they rotate the tires.
     
  4. zeng

    zeng New Member

    Joined:
    Aug 28, 2021
    28
    8
    0
    Location:
    Kuala Lumpur
    Vehicle:
    Other Hybrid
    Model:
    N/A
    Mind sharing the alignment numbers?
    You may have high amount of toes in/out.
    Tire pressure drop has more influence on fuel economy hit than excesssive toes I believe.
     
  5. vvillovv

    vvillovv Senior Member

    Joined:
    Mar 19, 2013
    1,867
    656
    0
    Location:
    NY
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Plus
    Depends on how badly the tires were worn and where the excessive wear was. After an alignment with excessive tire wear, it can be just like putting new tires on the car in that the tires have to re wear into the new alignment, and that takes time. 48 to 40 is pretty big drop, but again, all depends on how bad the tires were worn in the spots the mechanic pointed out. Are you thinking about a new set of tires, possibly? If you're already thinking about going back to the dealer, and possibly thinking about a new set of tires and possibly buying them from the dealer, you could ask your mechanic if new tires might help.
     
    #5 vvillovv, Nov 23, 2021
    Last edited: Nov 23, 2021
  6. douglasjre

    douglasjre Active Member

    Joined:
    Sep 13, 2008
    756
    288
    0
    Location:
    Orlando, FL
    Vehicle:
    2010 Prius
    Model:
    ----USA----
    Rotating bald tires to rear and full tread to front puts larger diamer tires in front and pseudo mpg drop
     
Loading...