40mpg?

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

  1. prince

    prince Junior Member

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    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!
     
  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
     
  3. Pluggo

    Pluggo Senior Member

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    Wait, does the cabin filter affect gas mileage?
     
  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.
     
  5. jaspernuts

    jaspernuts Junior Member

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    I cleaned my egr circuit and intake and jumped from 45 to 50 mpg.
     
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  6. jmccloskey

    jmccloskey New Member

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    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!
     
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  7. prince

    prince Junior Member

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    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?
     
  8. MelonPrius

    MelonPrius Active 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?
     
  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 ?
     
  10. Exiled conservative

    Exiled conservative Junior Member

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    How do you clean the egr circuit and intake?
     
  11. bisco

    bisco cookie crumbler

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    see the nutzaboutbolts youtube video
     
  12. Raytheeagle

    Raytheeagle Senior Member

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