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Thread: gas mileage

  1. #1
    SE Level Member gpgt98's Avatar
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    Default gas mileage

    Just wondering what the average mileage is with everyone's cars? My dic is 21.7-22mpg city driving and driving with a light foot.. and how many miles do u guys get out of a full tank? I get around 310 miles, but when I fill up, my range is around 375-380.

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    SE Level Member kenizzle36's Avatar
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    Default Re: gas mileage

    I average about the same as you with a GT. Not sure how many miles Ive pulled out of a full tank. Dont remember what it was off hand.
    99 GP GT- Bosal mufflers, Custom intake.

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    Donating Users danielle15's Avatar
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    Default Re: gas mileage

    Right now, I'm sitting at 320 with still a bit over 1/4 tank left. Lately its been getting really good MPG's. I can normally get 23-24 (27+ pure highway) out of it doing mostly rural driving. And I'm pretty light on the pedal. Overall, your numbers are very close to my GT's.
    I did run some sea foam thru just the gas tank and it did seem to help a little bit.

  4. #4
    SE Level Member gpgt98's Avatar
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    Default Re: gas mileage

    I will be running sea foam and doing a tune up soon. And I have a bad 02 sensor so a new one is on its way.. the most I've ever got out a full tank was like 325.. I'm usually at 150miles at half tank

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    Donating Users danielle15's Avatar
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    Default Re: gas mileage

    Sounds about normal. I keep track of all my miles i get out a tank and figure my MPG's against the DIC (which actually seems to be pretty dead on).
    When I got my car, it'd had a new to it motor put in about a year prior. I'm sitting at 105k miles now so theoretically it's due for new plugs/flushes and all that good stuff. But, I'm not sure if all that was replaced when they swapped engines.
    Can't hurt to do it anyways.

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    SE Level Member kenizzle36's Avatar
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    Default Re: gas mileage

    Never hurts. When I bought mine they told me they had did a tune up and flushes ect. Checked plugs and wires and trans fluid, all were bad or old. So I ended up doing it all. MPG didnt go up though.
    99 GP GT- Bosal mufflers, Custom intake.

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    Default Re: gas mileage

    I'm going to sticky this so no one makes this exact thread over and over again.

    Right now I'm getting 17.4 MPG city only because I'm being nice to it.

    I can get that number quite a bit lower if I tried.

  8. #8
    SE Level Member gpgt98's Avatar
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    Default Re: gas mileage

    Yeah it def wouldn't hurt. Im replacing the fuel filter as well and will run seafoam thru gas tank, oil, and vacuum lines. Hoping to smooth out my idle a bit and get back some mpg's.. Also a ubend delete to free up the exhaust more

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    SE Level Member gpgt98's Avatar
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    Default Re: gas mileage

    Quote Originally Posted by matt5112 View Post
    I'm going to sticky this so no one makes this exact thread over and over again.

    Right now I'm getting 17.4 MPG city only because I'm being nice to it.

    I can get that number quite a bit lower if I tried.
    Yay my first sticky!! lol

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    GXP Level Member z3r0's Avatar
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    Default Re: gas mileage


    Quote Originally Posted by TLSheff View Post
    I'm a Sex Offender

  11. #11
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Default Re: gas mileage

    Like 15-16 mpgs lol.

    I drive it maybe 7 miles a day when I do drive it. I can get around 225ish to a tank most of the time, but if I drive it lighty around town I can get 18-19ish mpgs which is pretty good IMO. I'm sure I'll chime in later to say what I'm getting for mpgs later on.

    SMGPFC Member #1

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    GXP Level Member 02 WS6 TA's Avatar
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    Default Re: gas mileage

    The '01 has dropped off a good bit in the last 6 months- Was at 22.7 city, now it's between 17.9-18.5 by the DIC. Beats the isht outta me.
    I may say rude things but learn to take a joke. The internet is funny when you can laugh.

  13. #13
    GTP Level Member Juanmiguel's Avatar
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    Default Re: gas mileage

    Mine went up on this last mod install, I did the SSIC, ported SC, TB and LIM at the same time and now it's 20-22 mpg city driving and 35+ highway with a very light foot. It was doing way worse before I installed those. I still haven't figured out why the MPG improved so much with those parts.

  14. #14
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    Default Re: gas mileage

    Quote Originally Posted by 02 WS6 TA View Post
    The '01 has dropped off a good bit in the last 6 months- Was at 22.7 city, now it's between 17.9-18.5 by the DIC. Beats the isht outta me.
    Temperature change...then again...if that was the case it should be doing BETTER, not worse.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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    GXP Level Member 02 WS6 TA's Avatar
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    Default Re: gas mileage

    It's a 2 stroke. LOL
    I may say rude things but learn to take a joke. The internet is funny when you can laugh.

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    Default Re: gas mileage

    Is that the one that mysteriously loses oil?

  17. #17
    GXP Level Member rocafella2032's Avatar
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    Default Re: gas mileage

    I get 19 if I'm lucky

  18. #18
    GXP Level Member 02 WS6 TA's Avatar
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    Default Re: gas mileage

    Quote Originally Posted by matt5112 View Post
    Is that the one that mysteriously loses oil?

    Yep. If it keeps messing with me, ya'll are going to see an LS4 GTP.
    I may say rude things but learn to take a joke. The internet is funny when you can laugh.

  19. #19
    GT Level Member RegalGS98s's Avatar
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    Default Re: gas mileage

    Regal was getting 21MPG. The 2 door GTP was getting 24-25 mpg, but could get 27 mpg if I drove lightly. Which now after dismantling the engines and looking at the 2 different engines pistons, figured out the previous owner of the GTP swapped in a NA block to essentially make a topswap. Could be where I get the extra mileage.
    SMGPFC #0330 - 3.25, Intercooled, Custom Tune, 1.84rr, LS6 Springs, roller timing chain, SLP Headers, Borla Exhaust, built Trans, B&M Trans Cooler, home cut poly uppers, gapless rings, N* TB, Ported heads.
    Soontocome: CAM?, Custom modified M112, home poured Poly Engine and Trans mounts

  20. #20
    Mullet Member Wotgtp's Avatar
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    Default Re: gas mileage

    Getting about 25 mpg's with about 80% highway miles according to the DIC. I still have yet to tune the car with the headers.
    - Ed - 2000 Grand Poverty Daytona edition. Rough idle. Funny whistle. Steering issues at WOT. 3.8 SC pulley.

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