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New need advice plz.

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Mal14, Sep 27, 2017.

  1. Mal14

    Mal14 New Member

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    I have 2014 prius with 80k miles and except for oil change and cabin air filter and air filter. I haven't done any other service on it. Now my MPG has dropped to 4.2 and taking off is not as quick as used to be. Please I need some maintenance advice. Thanks all of you.
     
    #1 Mal14, Sep 27, 2017
  2. JC91006

    JC91006 Senior Member

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    Mpg is 4.2 miles? So you're at empty after 50 miles?
     
    #2 JC91006, Sep 27, 2017
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  3. bisco

    bisco cookie crumbler

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    welcome! how many miles per year are you putting on her? is that 4.2 liters per 100 miles?
     
    #3 bisco, Sep 27, 2017
  4. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    Cheapest solution, pump up your tires to 40 psi in front/38 psi in rear.
    It is early, but check your 12 volt battery.
    Wheel alignment would need to be horrible, does it track well?
    What does the dealer say?
     
    #4 JimboPalmer, Sep 27, 2017
  5. Mal14

    Mal14 New Member

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    It used to give me 50mpg or higher but the past couple of month the mpg has dropped.i use shell gas only and mobile 1 0w20 oil
     
    #5 Mal14, Sep 28, 2017
  6. Mal14

    Mal14 New Member

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    I have new tires on it and doesn't have a track yet.12 v battery is good. Haven't took to the dealer yet. My warranty is done n not trying to deal with dealer.
     
    #6 Mal14, Sep 28, 2017
  7. Mal14

    Mal14 New Member

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    I used to drive it a lot and I bought this car new in mid 2014 and now has 80k miles on it.the mpg used to be 50.mpg or above and now it's 42.00 or lower.
     
    #7 Mal14, Sep 28, 2017
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  8. JC91006

    JC91006 Senior Member

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    It's the new tires
     
    #8 JC91006, Sep 28, 2017
  9. Mal14

    Mal14 New Member

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    i drove the car in those tires 20k already but the mpg dropped like 5k ago.so do u think it's possible it can be tires?
     
    #9 Mal14, Sep 28, 2017
  10. JC91006

    JC91006 Senior Member

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    20k miles is not new tires. Threw in a curve ball eh?

    I'd check the tire pressure and the 12v battery.

    My car gets around 40mpg with 17 inch wheels, so I can't say yours is bad
     
    #10 JC91006, Sep 28, 2017
  11. Mal14

    Mal14 New Member

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    Thanks JC and I will check my battery and the threads of tires r pretty new that's y I still call em new :) but are u happy with 40mpg?
     
    #11 Mal14, Sep 28, 2017
  12. JC91006

    JC91006 Senior Member

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    I probably can get 50mpg if I drive like Ms Daisy. But I like being a little aggressive sometimes. 40mpg is great, can't complain
     
    #12 JC91006, Sep 28, 2017
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  13. bisco

    bisco cookie crumbler

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    dropping from 50 to 40 is 20% and there has to be a cause. if your style of driving, weather and commute is the same, you have to begin a process of elimination. tire pressures, 12v, throttle body, injectors, air and cabin filters, maf, intake manifold, egr, pct, etc.
     
    #13 bisco, Sep 28, 2017
  14. MelonPrius

    MelonPrius Senior Member

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    It's a long shot because the car is relatively new, but I've read that a dying traction battery can cause reduced mpg. At least it's still under warranty.
     
    #14 MelonPrius, Sep 28, 2017
  15. mjoo

    mjoo Senior Member

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    What would you say would be the average length of your trips now?
     
    #15 mjoo, Sep 28, 2017
  16. interested

    interested New Member

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    #16 interested, Sep 30, 2017
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