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2018 GMC Sierra 1500 MPG

Based on data from 195 vehicles, 18,116 fuel-ups and 5,119,841 miles of driving, the 2018 GMC Sierra 1500 gets a combined Avg MPG of 15.96 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 Denali 6.2L V8 GAS Automatic 8 Speed
    Added May 2024 • 98 Fuel-ups

    Property of Zebby76

  • 16.8 Avg MPG
  • Babs (Barbara) 2018 Sierra 1500 Denali

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Nov 2024 • 9 Fuel-ups

    Property of nicklebyrd20210

  • 15.3 Avg MPG
  • GMC Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Jun 2018 • 379 Fuel-ups

    Property of Buckshot48

  • 17.9 Avg MPG
  • Vador

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Apr 2024 • 55 Fuel-ups

    Property of drink2006

  • 18.6 Avg MPG
  • GMC Sierra 1500 2018

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Apr 2018 • 195 Fuel-ups

    Property of JLF52

  • 18.8 Avg MPG
  • Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added May 2021 • 139 Fuel-ups

    Property of gabeyoung

  • 11.8 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed
    Added Jun 2024 • 21 Fuel-ups

    Property of richardcfo

  • 20.4 Avg MPG
  • 2018 GMC Sierra Denali 4x4

    2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Jun 2018 • 274 Fuel-ups

    Property of mpg01

  • 17.1 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 5.3L V8 FLEX Automatic 6 Speed
    Added Nov 2023 • 53 Fuel-ups

    Property of bsimmons86

  • 12.7 Avg MPG
  • Black Betty

    2018 GMC Sierra 1500 SLT 5.3L V8 ELECTRIC/GAS Automatic 6 Speed
    Added Dec 2018 • 338 Fuel-ups

    Property of tlawson85

  • 18.2 Avg MPG
  • Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Oct 2023 • 55 Fuel-ups

    Property of Jhs4

  • 14.2 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 Denali 5.3L V8 FLEX Automatic 8 Speed
    Added Aug 2023 • 19 Fuel-ups

    Property of MaxBurn

  • 12.9 Avg MPG
  • Big Red Eskimo

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
    Added Nov 2021 • 274 Fuel-ups

    Property of rkfdwc1

  • 15.5 Avg MPG
  • Truck

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Mar 2020 • 199 Fuel-ups

    Property of jasonbrakhage

  • 14.3 Avg MPG
  • 2018 GMC Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed
    Added Apr 2022 • 162 Fuel-ups

    Property of rtsteen

  • 17.7 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed
    Added Aug 2024 • 46 Fuel-ups

    Property of o_dog2003

  • 16.1 Avg MPG
  • Rooster

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Mar 2019 • 145 Fuel-ups

    Property of x62605

  • 17.5 Avg MPG
  • Denali

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Jan 2018 • 382 Fuel-ups

    Property of Godofwine7

  • 15.9 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
    Added Apr 2018 • 232 Fuel-ups

    Property of rleitht

  • 15.1 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Oct 2019 • 372 Fuel-ups

    Property of iNative

  • 15.9 Avg MPG

Recent Activity

from other GMC Sierra 1500 vehicles (View All)

Tips

Use Cruise Control Often

On steady flat roads (especially at higher speeds), cruise c... ...

by mathowie

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