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    Default Ultimate MPG guide - Check Expected Mileage (Pleas enter your verified mpg info)

    Well, it's time for a definitive MPG guide.

    What can you expect for your vehicle with certain upgrades?
    What kind of mileage can you expect on a new (to you) truck?
    How badly will larger tires affect your mileage?

    Hopefully we can get this guide to a point where all these questions will be answered and more.
    Please feel free to reply to this post and enter your own information. PLEASE keep your post factual - make sure your mileage has been verified more than once to ensure accuracy. Information we need is: Model, Engine, relevant upgrades, and what kind of roads (hwy, city, 50/50)?

    Your post will be added to the list below and deleted afterwards to keep things clean and easy to access.

    **if your vehicle is already listed, please don't let it stop you from entering your own information to verify or correct a current one**
    __________________________________________________

    1988 GMC Suburban - 350 - 13 mpg (50/50)
    1993 K1500 - 350 - 12.5 mpg (City)
    1993 Chevy Suburban 2500- 7.4l, 454, 4wd, dual exhaust, K&N filter - 13.9/7.9 mpg (Hwy/Heavy Towing)
    1994 Chevy Suburban K2500 - 7.4l, 454, 4wd - 12.5 mpg (Hwy)
    1996 GMC Sierra 1500 - 5.7l, Reg. cab - 17 mpg (City)
    1996 GMC Suburban K1500 - 18.5/16 mpg (Hwy/City)
    1997 GMC Sonoma - 4 cyl., 5 spd, electric fan, underdrive pulley, CAI - 32 mpg (50/50)
    1997 Chevy Suburban - 2WD, 5.7l - 20.5/16 mpg (Hwy/City)
    1998 GMC Sierra 2500 - 454 - 15/11/10 mpg (Hwy/City/Towing)
    1998 Chevy Suburban - 2wd - 11.3 mpg (City)
    1998 Chevy Suburban 1500 - 12 mpg (City)
    1999 Chevy Suburban K2500- 7.4l, 454, 4wd, 2" body lift, 305.75.16 - 10.5 mpg (50/50)
    2001 Chevy Suburban K1500 - 5.3l, 4wd - 15/11 mpg (Hwy/City)
    2001 Chevy Suburban K1500 - 5.3l, 4wd, K&N air filter - 17/12 mpg (Hwy/City)
    2002 Chevy Suburban - 2WD, 5.3l, FlexFuel - 20.5/14.5 mpg (Hwy/City)
    2003 Chevy Silverado 1500- 5.3l, Extended cab - 19.4 mpg (50/50)
    2003 Chevy Suburban - 5.4l - 15.4 mpg (50/50)
    2004 1500 WT - V6, 4.3l, 2wd, K&N filter, short bed - 20 mpg (50/50)
    2004 Silverado Z/71 - 5.3l, crew cab - 18 mpg (50/50)
    2005 Chevy Silverado - 6 cylinder, K&N CAI, MSD Ignition, Cat back dual exhaust - 20 mpg (Hwy)
    2005 Chevy Silverado - 5.3l, K&N FIPK, Magnaflow muffler, Hypertech Max Energy - 20 mpg (Hwy)
    2005 Chevy Silverado - 4.8l, 2wd, Reg cab, short bed - 23.5/19.2 mpg (Hwy/City)
    2005 GMC Sierra 2500HD - 9 mpg (City)
    2006 Chevy Colorado - unknown engine, 4wd, crew cab - 29 mpg (50/50)
    2006 Chevy Trailblazer - 4WD, 3.73 - 19.5 mpg (Hwy)
    2006 HHR - 2.4l - 28.5 mpg/32.2 (City/Hwy)
    2006 GMC Sierra - 5.3l, crew cab, Colant CAI - 19 mpg (unknown)
    2006 GMC Sierra - 4.8l, crew cab, 4wd- 10.5 mpg (Hwy)
    2007 Chevy Tahoe - 5.3l, 4wd, Diablo Tuner - 15 mpg (50/50)
    2007 Chevy Tahoe - 5.3l, 4wd - 15.7 mpg (50/50)
    2007 Chevy Suburban - 5.3l, - 16.5 mpg (50/50)
    2007 Chevy Colorado - 4 cylinder, 5 spd - 23 mpg (50/50)
    2007 Chevy Silverado Classic - 5.3l, Flowmaster dual exhaust, programmed with Hypertech - 19 mpg (50/50)
    2007 Chevy Silverado Z71 - 5.3l, crew cab - 18.5 mpg (50/50)
    2008 Chevy Colorado - 3.7l - 16 mpg (50/50)

    2005 Chevy Silverado 1500 5.3l crew cab 4x4 with fiberglass topper - 15/19 (cty/hwy)
    Last edited by 04sierracrewcab; 04-14-2009 at 12:23 PM.

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