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SV6 Fuel Economy

Discussion in 'VZ Holden Commodore (2004 - 2006)' started by kicker12, Aug 15, 2008.

  1. kicker12

    kicker12 New Member

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    Hey all...iv'e had my car for about a week now, and at the start i was getting 18l/100k but new that would improve once i filled the tank up etc.

    So i filled it up to brim on Wednesday morning with premium Vortex fuel from safeway/caltex.
    Since then i have driven locally, drove into tafe yesterday (up and back) which was pretty heavy city driving (about 40 k's worth total, id say 25 of those in heavy stop-start traffic) but drove very conservatively.
    I haven't majorly flogged it but ive opened it up a few times but not for long and im getting just over 16l/100k's

    I wouldn't call myself a rough driver or an over-accelerator but i thought i'd get better economy than 16 (especially with premium fuel)..And i know city drving is tough on the V6 but i wasn't expecting it to be that high. Just wondering what other Sv6 owners are getting, mine is an April 05 VZ SV6 with almost 82k on it.

    Cheers, any feedback or suggestions would be great.
     
  2. andyman

    andyman The Only 6sp VZ Wagon

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    check for voltage drop between the engine block and battery (negative) a service adviser that i know at holden was having high fuel consumption in a vz wagon and found excessive voltage drop, thus causing incorrect reading to the computer
     
  3. seaney

    seaney New Member

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    Do commodores have a knock sensor? I thought if you dont have a knock sensor it is useless to use higher octane fuel?
     
  4. PhantomSV6

    PhantomSV6 Enthusiast

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    Yeah mines pretty high aswell. Probably around the 14 mark.

    A decent tune should help a bit.
     
  5. poweredbycng

    poweredbycng New Member

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    If it's a high kay sample then check the exhaust gas oxygen sensor.

    Regards,
    Dave
     
  6. ashbox

    ashbox back in black

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    i must be pussy footin mine around, i was on a cruise and i was givin it a bit and i avg 11.2lt/100km. Around town i'm down to 9.9.
     
  7. kicker12

    kicker12 New Member

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    thats really good ashbox, i wish i had that :(
     
  8. Flat_White

    Flat_White Banned

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    I get about 15l/100 *ON LPG* :)
     
  9. CMA

    CMA New Member

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    Are these figures according to the trip computer? If they are mine reads about 12L/100kms all city driving
     
  10. ashbox

    ashbox back in black

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    yeah off the computer, well mine is anyway
     
  11. kicker12

    kicker12 New Member

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    Yeah thats off my trip computer, it's at 14.6l/100k now but thats mostly because i took it for a 30 min drive on the freeway.

    What do you guys set the "km's to go" option at when you start your car up? Mine is at 500km, does that effect the consumption reading at all?

    Cheers for all your advice ill have to check some of it out, i might be getting a new exhaust so we'll see if that improves the economy..
     
  12. BullittSV6

    BullittSV6 New Member

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    You set it to how many km's you have left to travel on a trip and it calculates how long it will take. Good if you have people that ask "Are we there yet?" and you can say "No, but we will be in approximately 74 minutes so shut up!"
     
  13. kicker12

    kicker12 New Member

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    Sorry i meant the option where it says how many km's till empty :p

    my bad, shoulda been more specific
     
  14. adamc11

    adamc11 Donating Member

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    Don't trust the trip computer. Fill the tank up to the brim, even when it clicks off keep filling until it's about to start pouring out. Then drive it for a few hundred kms then fill it up the same way (right to the top) and calculate actual litres put in per hundred kms.
     
  15. andyman

    andyman The Only 6sp VZ Wagon

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    your wasting fuel doing that, cause it will fill the charcoal canister and just pump raw fuel back through your intake
     
  16. kicker12

    kicker12 New Member

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    Ill try that adam, measuring how much im actually using...just a question, are the fuel gauge and computer related? Or do they run on their own merits.

    Iv'e done around 250km on this tank its got about 1/3 of a tank left according to the gauge, and the computer says i have about 200km of more travel till the tank is empty, im not sure what to believe-if any :S
     
  17. PhantomSV6

    PhantomSV6 Enthusiast

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    I've calculated that my fuel gauge is 5 to 10L out.
     
  18. Ewok

    Ewok New Member

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    Damn dude, I am getting about 11.6/100km at the moment out of mine. Had it for about 3 weeks now :) I went on a cruise on Sunday where we drove from Perth -> gingin -> Toodyay (wa of course) and got it down to 10.6/100kms. Did about 350kms on just above half a tank. When I give it a caining though it does go up to about 14.2/100. I drive 25kms from home -> work and then back again every day and then the travel in between. Consistently with this sort of driving I average about 12.6/100kms.

    Hope that helps ya dude :)
     
  19. BullittSV6

    BullittSV6 New Member

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    Had my SV6 down to 8.6 L/100km @ 113km/h cruising the highway (110 zone) this weekend.

    Then I had a slight head wind and it went up to 9.0L/100km.
     
  20. kicker12

    kicker12 New Member

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    thats crazy low...mine is at 340 k's on the trip and its just hit the red zone
     

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