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40mpg?

Discussion in 'Gen 3 Prius Fuel Economy' started by prince, Aug 2, 2018.

  1. prince

    prince Junior Member

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    2011 Prius
    Model:
    Three
    I bought the car at a little over 60k and was getting around 50mpg. Now it has a little over 130k and getting 40mpg. New Interstate battery and replaced all 4 tires with Bridgestone Ecopia EP20. Any ideas? Thank you in advance!
     
    #1 prince, Aug 2, 2018
  2. bisco

    bisco cookie crumbler

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    tire pressure

    a/c use

    air and cabin filter

    throttle body

    egr circuit

    intake manifold

    spark plugs

    injectors
     
    #2 bisco, Aug 2, 2018
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  3. Pluggo

    Pluggo Senior Member

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    Wait, does the cabin filter affect gas mileage?
     
    #3 Pluggo, Aug 2, 2018
  4. bisco

    bisco cookie crumbler

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    can reduce a/c effectiveness, requiring higher settings. couldn't put a number on it though.
     
    #4 bisco, Aug 2, 2018
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  5. jaspernuts

    jaspernuts Junior Member

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    I cleaned my egr circuit and intake and jumped from 45 to 50 mpg.
     
    #5 jaspernuts, Aug 2, 2018
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  6. jmccloskey

    jmccloskey New Member

    Joined:
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    Location:
    Stoughton, WI
    Vehicle:
    2011 Prius
    Model:
    II
    I'm at 203K on a 2011. Last fall I had my fuel injectors cleaned, EGR valve and intake manifold replaced before finding the issue was actually the head gasket, which I also had replaced (ouch!!)

    This spring I replaced a rear wheel bearing.

    Last couple months I noticed MPG drop to about 32MPG. Noticed I wasn't rolling on a hill like I'd expect to when in neutral.
    Found rear brakes were pretty much siezed. Replaced calipers, rotors and pds. Up to about 48-50MPG now.

    Hopefully I'm good for a while!
     
    #6 jmccloskey, Aug 3, 2018
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  7. prince

    prince Junior Member

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    Location:
    Atlanta, GA
    Vehicle:
    2011 Prius
    Model:
    Three
    I poured some techron fuel cleaner thinking it may not do any good and I'm getting 45mpg now, still not where I want to be but it's something. I typically replace my cabin air filters every 10k miles. I replaced spark plugs at 120k.

    I have never even heard of an egr circuit before. I haven't touched the intake manifold or injectors.

    jaspernuts - I may be where you were now, did you clean yourself or take to someone? If so, how much was the cost?

    jmccloskey - 203k on the same year as me, very impressive! How is your hybrid battery?
     
    #7 prince, Aug 4, 2018
  8. MelonPrius

    MelonPrius Senior Member

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    Prince, were you getting 40 mpg over a handful of tanks or just 1 tank? How much did the mpg drop right after the new tires were put on and what is the psi?

    And about the Techron, did you increase 5 mpg on the next tank after using it? Was this the first time you used this type of product, and if not, what were the results the previous time?
     
    #8 MelonPrius, Aug 7, 2018
  9. Pdaddy

    Pdaddy Member

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    I experienced a 3 mpg drop going from conti eco to the bridgestone eco tires that you have.

    SM-G920V ?
     
    #9 Pdaddy, Sep 1, 2018
  10. Exiled conservative

    Exiled conservative Junior Member

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    How do you clean the egr circuit and intake?
     
    #10 Exiled conservative, Sep 2, 2018
  11. bisco

    bisco cookie crumbler

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    see the nutzaboutbolts youtube video
     
    #11 bisco, Sep 3, 2018
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  12. Raytheeagle

    Raytheeagle Senior Member

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    #12 Raytheeagle, Sep 3, 2018
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