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2018 GMC Sierra 1500 MPG

Based on data from 176 vehicles, 12,484 fuel-ups and 3,582,660 miles of driving, the 2018 GMC Sierra 1500 gets a combined Avg MPG of 16.25 with a 0.06 MPG margin of error.

Below you can see a distribution of the fuel-ups with 542 outliers (4.16%) removed.

Following shows the average MPG of each of the 176 vehicles in the system.

  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
    Added Oct 2019 • 147 Fuel-ups

    Property of iNative

  • 15.5 Avg MPG
  • Glenn

    2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Nov 2020 • 139 Fuel-ups

    Property of ghcrawford

  • 15.0 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Jan 2019 • 147 Fuel-ups

    Property of cbinnie22

  • 16.0 Avg MPG
  • Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Jan 2019 • 287 Fuel-ups

    Property of jered6323

  • 14.7 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Apr 2022 • 3 Fuel-ups

    Property of cheapguy99

  • 11.2 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 Denali 5.3L V8 FLEX Automatic 8 Speed
    Added Feb 2019 • 132 Fuel-ups

    Property of mpgapp

  • 14.4 Avg MPG
  • Sierra

    2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Oct 2018 • 128 Fuel-ups

    Property of ScottyR

  • 14.0 Avg MPG
  • 2018GMC SIERRA 4X4

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Feb 2020 • 54 Fuel-ups

    Property of jjz3

  • 19.2 Avg MPG
  • Black Betty

    2018 GMC Sierra 1500 SLT 5.3L V8 ELECTRIC/GAS Automatic 6 Speed
    Added Dec 2018 • 161 Fuel-ups

    Property of tlawson85

  • 18.0 Avg MPG
  • Denali

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Jan 2020 • 80 Fuel-ups

    Property of Teutonics

  • 17.8 Avg MPG
  • Big Red Eskimo

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
    Added Nov 2021 • 54 Fuel-ups

    Property of rkfdwc1

  • 15.2 Avg MPG
  • Truck

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Mar 2020 • 119 Fuel-ups

    Property of jasonbrakhage

  • 14.3 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Mar 2022 • 41 Fuel-ups

    Property of nvolz

  • 16.7 Avg MPG
  • 2018 GMC Sierra

    2018 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
    Added Oct 2018 • 139 Fuel-ups

    Property of bgrinder90

  • 14.1 Avg MPG
  • Denali

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Oct 2021 • 33 Fuel-ups

    Property of Philly9277

  • 15.6 Avg MPG
  • Jolene

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Jul 2020 • 97 Fuel-ups

    Property of eddiemoney

  • 17.3 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
    Added Apr 2018 • 149 Fuel-ups

    Property of rleitht

  • 15.1 Avg MPG
  • 2018 GMC Sierra Denali 4x4

    2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed
    Added Jun 2018 • 155 Fuel-ups

    Property of mpg01

  • 16.7 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Dec 2021 • 52 Fuel-ups

    Property of riggity27

  • 16.4 Avg MPG
  • Sierra

    2018 GMC Sierra 1500 Denali Automatic 8 Speed Crew Cab Pickup
    Added Jul 2021 • 41 Fuel-ups

    Property of ch56vy

  • 14.3 Avg MPG

Recent Activity

from other GMC Sierra 1500 vehicles (View All)

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