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

Discussion in 'Performance & Fuel' started by Springthing, Apr 12, 2009.

  1. Blacksheep1

    Blacksheep1 Rockstar 3 Years 500 Posts

    1998 K1500 ext cab 4.3 5spd stock 17.1 city driving Skip shifting staying below 2k
  2. jgalantine

    jgalantine New Member

    03 Silverado K1500 reg cab long bed - 4.8 4x4 - auto trans - OEM size tires - no mods at the moment.
    I run synthetic fluids in the crankcase, diffs, and transfer case. Stock fluid in the trans. 87 octane fuel.
    87k miles.
    50/50 I live in city, but take freeway everywhere.

    I just verified via 3 150+mile calculations that I am getting 15.9 mpg.

    I am planning fuel filter, tranny fluid (synth) and filter, CAI, catback, and diablo tuner in the next 3 months to improve HP and MPG. Will post results as they come in.
    Last edited: May 2, 2011
  3. jake's silverado

    jake's silverado Epic Member 5+ Years 100 Posts

    2011 2500 hd crew cab 4X4 6.0 lit. 600km (275 miles)trip mostly hwy @ 110 kph (69 mph) got 14.4 lit/100km (16.4mpg US).
    5 in the truck and the back full of camping gear. Extang solid cover.
    Last edited: May 28, 2011
  4. randyman

    randyman New Member

    2001 Suburban 5.3 4X4 22" rims 12.5-13.5mpg

    Attached Files:

  5. jake's silverado

    jake's silverado Epic Member 5+ Years 100 Posts

    Did a trip this weekend with about 7200lbs worth of travel trailer and got 29 lit/100 km...
  6. BornAgainBiker55

    BornAgainBiker55 Rockstar 100 Posts

    Truck: 2007 NBS Silverado 1500, Extended Cab 6' bed. 5.3l steel block (LY5, 'J' VIN) V8 with Active Fuel Management.
    Upgrades: Synthetic oils. Spray On Bedliner. 3/4 ton truck 10 ply tires. I keep as little weight in as possible and don't accelerate too hard, nor do I speed.
    MPG: 18.9 max, 17.5 avg, 13.1 min with 2/3 of the time on the interstate at 75mph. Calculated by miles driven divided by gallons pumped to a full tank. Most of the time I buy from Shell
  7. Goldie

    Goldie Epic Member 5+ Years 1000 Posts

    Just filled up yesterday and made 26.9 mpg. This is down from the same period last year when I made 27.1 mpg. And this is my first tank on my newly reprogrammed (for economy) ECU. 95% rural driving and 5 % highway.

    07 Sierra Classic, 4.3 L. 5 spd. M/T
    Tires inflated to sidewall max. pressure, skip shifting from 3rd to 5th when practical,
    MSD Coil, under drive pulleys, headers, cat-back exhaust, Taylor plug wires, stock plugs, K&N FIPK, ScanGuageII, hypermiling driving techniques, Vararam TB insert, tonno cover. ECU tuned for economy.
    Last edited: Jun 15, 2011
  8. Silverado 2001

    Silverado 2001 New Member

    2001 silverado 1500 standard cab shorted step side 4x4 z71 3" custom cat back. Flowmaster 40 series 3.5" tip. 15-17 mpg 60/40 city/highway if I stay out of it. 14-15 if I get after it even once or twice.
  9. 02Savana

    02Savana New Member

    2002 GMC Savana 2500 5.7 3.73 4l80E stock work truck. I carry about 1000lbs. 8 city 11 highway
  10. BigMike2011

    BigMike2011 Member

    2011 silverado extended cab 4x4
    i get about 13 in the city and about 15 on the highway

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