Toyota Prius 2011 fuel consumption problem

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Arslan Mughal 11, Jul 13, 2016.

  1. Arslan Mughal 11

    Arslan Mughal 11 New Member

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    I have Toyota Prius 2011 which fuel average is only 15Km/li before 1 month average is 20km/li but after Throtle cleaning,spark plugs change and air filter change average is down to 15km/li. I feel one thing when car engine is in idle state and slow speed average drops very quickly plz any expert suggestions what i can do????
    Throtle body cleaned with spray as a regular service that recommended by Toyota for car after 10k km driven (like plug firing test, throtle cleaning, Mobil oil change, Air filter change), All orignal parts used and tomorrow i aslo diagnosed total engine with scanner from Toyota dealership but mechanic gives me full report and in report everything is perfect.If everything is fine what is the problem with my prius ??
    Before one month my car with full tank give me 800Km/Tank average and this time average is 500Km/Tank
     
  2. Tideland Prius

    Tideland Prius Moderator of the North
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    It's possible the cleaning dislodged some dirt or crud that is now stuck somewhere in the engine.

    Also, spark plug change after 10,000km? That seems excessive. Ours isn't changed until nearly 180,000km or more. Different climate and driving conditions, I know but that's a big difference - wow.
     
  3. Arslan Mughal 11

    Arslan Mughal 11 New Member

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    Spark plug changed aft
     
  4. Arslan Mughal 11

    Arslan Mughal 11 New Member

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    Spark plug changed after 30k km and there is no
    spark plugs changed after 30k km and there is no crud or dirt in engine i aleady cleaned total engine from Toyota
     
  5. Arslan Mughal 11

    Arslan Mughal 11 New Member

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    When i accelerate from 0 to 60km engine sound is very loud thats why average is down but when i told same thing to Toyota mechanic he told me everything is fine (throtle body is cleaned,air filter is already new, spark plugs is already new installed) there is any technical issue thats not shown in diagnosing scanner.
     
  6. bisco

    bisco cookie crumbler

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    how many km on her?
     
  7. Arslan Mughal 11

    Arslan Mughal 11 New Member

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    You mean ODO??
     
  8. bisco

    bisco cookie crumbler

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  9. Arslan Mughal 11

    Arslan Mughal 11 New Member

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    ODO is 97k
     
  10. bisco

    bisco cookie crumbler

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    could any hoses have been left disconnected, or air leaking into the air cleaner?
     
  11. Arslan Mughal 11

    Arslan Mughal 11 New Member

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    very instantly average down before 1 month everything is fine and average is 20 to 22 km and that time ODO is 96k.
     
  12. Arslan Mughal 11

    Arslan Mughal 11 New Member

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    No any air leaking already inspected.
     
  13. Arslan Mughal 11

    Arslan Mughal 11 New Member

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    Mechanic open again everything to check any hoses left but there is nothing.
     
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  14. bisco

    bisco cookie crumbler

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    oem plugs, gapped correctly?
     
  15. Arslan Mughal 11

    Arslan Mughal 11 New Member

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    Yes checked
     
  16. Maarten28

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    You say the engine is very loud during acceleration. Is the hybrid system working properly? Is the battery gauge changing? Can you drive electric?
    Or are you just accelerating maximally every time?
     
  17. Arslan Mughal 11

    Arslan Mughal 11 New Member

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    Yes Hybrid system works properly and also battery gauge charging. I can drive 8 to 10 km on EV mode before 1 month and today its to less with full battery just 2 to 3 km distance covered. No i just accelerating smoothly every time.
     
  18. Arslan Mughal 11

    Arslan Mughal 11 New Member

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    I also inspect battries or cells one by one voltage from Toyota dealership he tell me everything is fine but what's the problem if everything is fine why prius is short 7 km on EV mode if everything is fine
     
  19. booke02

    booke02 Active Member

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    Are you sure about that? My 2010 Prius has only been able to do 1-2 km from the day I bought it.

    Did you have any work done on the brakes recently?
     
  20. Arslan Mughal 11

    Arslan Mughal 11 New Member

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    No any work done on brakes.
     
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