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2018 GMC Sierra 1500 MPG

Based on data from 195 vehicles, 18,063 fuel-ups and 5,106,517 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 255 outliers (1.39%) removed.

Following shows the average MPG of each of the 195 vehicles in the system.

2018 GMC Sierra 1500s For Sale Nearby

  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Jan 2021 • 21 Fuel-ups

    Property of maassen5995

  • 19.4 Avg MPG
  • 2018 Sierra Denali

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Feb 2019 • 75 Fuel-ups

    Property of gfervin

  • 14.8 Avg MPG
  • Bluejay

    2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
    Added Jul 2021 • 107 Fuel-ups

    Property of Bigtrucker53

  • 18.5 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 6 Speed
    Added Feb 2022 • 101 Fuel-ups

    Property of Ridley13

  • 14.5 Avg MPG
  • 2018 GMC Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Mar 2018 • 84 Fuel-ups

    Property of geeklife

  • 17.7 Avg MPG
  • 2018 Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
    Added Feb 2019 • 121 Fuel-ups

    Property of trentm

  • 15.5 Avg MPG
  • 2018 Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Nov 2018 • 75 Fuel-ups

    Property of Matt1552

  • 20.1 Avg MPG
  • 2018 Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Jul 2018 • 148 Fuel-ups

    Property of mkirbitz

  • 16.7 Avg MPG
  • Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
    Added Oct 2019 • 215 Fuel-ups

    Property of hubbd33

  • 14.8 Avg MPG
  • 2018 GMC Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Jun 2019 • 113 Fuel-ups

    Property of Daaavid

  • 15.6 Avg MPG
  • Denali

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Jul 2018 • 82 Fuel-ups

    Property of ricanizedkilla

  • 13.6 Avg MPG
  • GMC

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Dec 2018 • 309 Fuel-ups

    Property of Tigers20

  • 18.1 Avg MPG
  • GMC Sierra 1500 TOWING

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

    Property of Dirtpig

  • 9.5 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
    Added Oct 2020 • 5 Fuel-ups

    Property of JTinFL

  • 17.4 Avg MPG
  • Blue beauty

    2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
    Added Sep 2018 • 130 Fuel-ups

    Property of grandmercls

  • 15.9 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
    Added Dec 2018 • 85 Fuel-ups

    Property of NGreen08

  • 16.2 Avg MPG
  • 2018 GMC Sierra

    2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Dec 2017 • 43 Fuel-ups

    Property of gulas47

  • 16.1 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
    Added Apr 2018 • 80 Fuel-ups

    Property of lancecai77

  • 17.3 Avg MPG
  • GMC

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Mar 2019 • 73 Fuel-ups

    Property of Bingman

  • 16.3 Avg MPG
  • GMC Denali

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Aug 2019 • 25 Fuel-ups

    Property of scatterscott

  • 14.8 Avg MPG

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