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Thread: gas guzzler???

  1. #1
    Junior Member
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    Default gas guzzler???

    How much fuel does the G8 GT consume if you're an "occasional" spirited driver?

  2. #2
    Moderator GM_Fan's Avatar
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    I went on a 200+ mile trip today. Mixed driving-Interstate(about 80mph) ,highway, City and waxed a pesky Hyundai Tiburon for good measure.

    I got just under 24 mpg.

  3. #3
    Lucky SOB G8GT721's Avatar
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    before my tune on the highway i would get 21-22, and city driving 16, now i average 19 city and have yet to drive for any long distance on the highway

    2008 White Hot G8 GT

    (new)499RWHP/474RWTQ Mustang Dyno
    (old)451RWHP / 498RWTQ Mustang Dyno
    1/4=11.400@118.7 17" Drag Radials, stall, cam 1.77 60'
    1/4=12.004@120.6 17" Drag Radials 2.03 60'
    1/4=12.270 @118.3 on 18" All Seasons 2.08 60'
    SLOWHAWK Tuned

    If you can't say anything intelligent, say something loud and stupid
    My Garage

  4. #4
    Beyond Help johnbell2's Avatar
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    Coming up on 3k miles... I tend to average around 18-19 mpg in mixed driving. I have a heavy foot and like to hunt BMWs for sport so could probably do better.

    Stock 2009.5 G8 GT, burning regular 87 octane (Chevron only, please). Started out getting 16.5 mpg but she's breaking in nicely.

  5. #5
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    what is the tank capacity?

  6. #6
    Lucky SOB G8GT721's Avatar
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    20 gallons

    2008 White Hot G8 GT

    (new)499RWHP/474RWTQ Mustang Dyno
    (old)451RWHP / 498RWTQ Mustang Dyno
    1/4=11.400@118.7 17" Drag Radials, stall, cam 1.77 60'
    1/4=12.004@120.6 17" Drag Radials 2.03 60'
    1/4=12.270 @118.3 on 18" All Seasons 2.08 60'
    SLOWHAWK Tuned

    If you can't say anything intelligent, say something loud and stupid
    My Garage

  7. #7
    5OH TERMIN8R Devilish34's Avatar
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    If my foot is in it deep 16 ish Easy with some aggressive spurts 22-24
    Retiring as the undefeated Cam only Record Holder 11.454@120

    Come and get the title bitches it's up for grabs

  8. #8
    5OH TERMIN8R Devilish34's Avatar
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    Quote Originally Posted by G8GT721 View Post
    20 gallons
    thought it was 18 or 19?
    Retiring as the undefeated Cam only Record Holder 11.454@120

    Come and get the title bitches it's up for grabs

  9. #9
    Addicted Member caretaker's Avatar
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    I get about 25-26 on the highway.
    Don't do much real city driving, but rural around town
    will be about 20-21.
    Lowest ever was about 18-19 right after I got it
    and that was pretty aggressive.

    If you want to be technical the tank holds 19.2 gallons. I think.

  10. #10
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    17.something, about 50% constant 70mph highway, 50% cut-and-thrust city driving. Much better than when new (14.xx).

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