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2018 GMC Sierra 1500 MPG

Based on data from 186 vehicles, 16,350 fuel-ups and 4,618,533 miles of driving, the 2018 GMC Sierra 1500 gets a combined Avg MPG of 15.97 with a 0.05 MPG margin of error.

Below you can see a distribution of the fuel-ups with 236 outliers (1.42%) removed.

Following shows the average MPG of each of the 186 vehicles in the system.

2018 GMC Sierra 1500s For Sale Nearby

  • My Sierra 1500

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Apr 2019 • 8 Fuel-ups

    Property of lcastrey

  • 16.9 Avg MPG
  • My Denali

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Jul 2018 • 16 Fuel-ups

    Property of changedman

  • 30.4 Avg MPG
  • Stonewood

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Nov 2018 • 45 Fuel-ups

    Property of Stonewood

  • 17.0 Avg MPG
  • 2018 Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 8 Speed
    Added Feb 2019 • 20 Fuel-ups

    Property of Mikecompton

  • 15.8 Avg MPG
  • 2018 GMC Sierra SLT

    2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
    Added Nov 2017 • 91 Fuel-ups

    Property of FriskyLingo

  • 15.7 Avg MPG
  • Denali

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Sep 2018 • 19 Fuel-ups

    Property of SpeedyD

  • 16.5 Avg MPG
  • Black Sierra

    2018 GMC Sierra 1500 5.3L V8 FLEX Automatic 6 Speed Extended Cab Pickup
    Added Aug 2018 • 27 Fuel-ups

    Property of GaGolfSup

  • 15.8 Avg MPG
  • GMC Sierra

    2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed Standard Cab Pickup
    Added Apr 2021 • 53 Fuel-ups

    Property of Twiese

  • 15.5 Avg MPG
  • Bo’s Sierra SLT

    2018 GMC Sierra 1500 SLT 5.3L V8 ELECTRIC/GAS Automatic 6 Speed
    Added Mar 2018 • 66 Fuel-ups

    Property of boewing1

  • 16.7 Avg MPG
  • 2018 GMC Sierra

    2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Feb 2019 • 6 Fuel-ups

    Property of 71sbeetle

  • 16.3 Avg MPG
  • Betty

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
    Added Jan 2018 • 42 Fuel-ups

    Property of and_steve

  • 15.4 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
    Added Sep 2018 • 31 Fuel-ups

    Property of sessionh

  • 15.0 Avg MPG
  • 2018 Sierra

    2018 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
    Added Mar 2018 • 33 Fuel-ups

    Property of yogi-bear

  • 16.2 Avg MPG
  • Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Nov 2018 • 8 Fuel-ups

    Property of iamryanash

  • 15.8 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
    Added Nov 2018 • 6 Fuel-ups

    Property of cat71leg

  • 15.1 Avg MPG
  • Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Dec 2018 • 8 Fuel-ups

    Property of iamryanash

  • 15.8 Avg MPG
  • Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Dec 2018 • 8 Fuel-ups

    Property of iamryanash

  • 15.8 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Jul 2018 • 20 Fuel-ups

    Property of canesnhlfan

  • 17.9 Avg MPG
  • Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Oct 2018 • 6 Fuel-ups

    Property of Rimshot

  • 22.1 Avg MPG
  • Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Nov 2018 • 4 Fuel-ups

    Property of mws4ua

  • 13.8 Avg MPG

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