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2018 GMC Sierra 1500 MPG

Based on data from 165 vehicles, 10,195 fuel-ups and 2,942,762 miles of driving, the 2018 GMC Sierra 1500 gets a combined Avg MPG of 16.27 with a 0.06 MPG margin of error.

Below you can see a distribution of the fuel-ups with 372 outliers (3.52%) removed.

Following shows the average MPG of each of the 165 vehicles in the system.

2018 GMC Sierra 1500s For Sale Nearby

  • 2018 Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Nov 2018 • 92 Fuel-ups

    Property of gerickson24

  • 14.2 Avg MPG
  • 2018 Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 8 Speed Crew Cab Pickup
    Added Jan 2019 • 246 Fuel-ups

    Property of civicsiracer06

  • 14.7 Avg MPG
  • Sierra

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 6 Speed Extended Cab Pickup
    Added Jun 2018 • 76 Fuel-ups

    Property of JDubz313

  • 15.6 Avg MPG
  • Sierra Red

    2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Feb 2019 • 103 Fuel-ups

    Property of Snafujg

  • 16.2 Avg MPG
  • Denali

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Jan 2018 • 233 Fuel-ups

    Property of Godofwine7

  • 16.0 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
    Added Apr 2018 • 111 Fuel-ups

    Property of rleitht

  • 15.1 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 4.3L V6 FLEX Automatic 6 Speed
    Added Jan 2020 • 88 Fuel-ups

    Property of GregEscobar

  • 19.2 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Dec 2020 • 50 Fuel-ups

    Property of ianspecs

  • 13.8 Avg MPG
  • GMC Sierra 1500

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Jun 2018 • 117 Fuel-ups

    Property of ndsewall

  • 16.5 Avg MPG
  • Sierra All Terain

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Jan 2020 • 72 Fuel-ups

    Property of 76cj

  • 18.9 Avg MPG
  • Jolene

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Jul 2020 • 42 Fuel-ups

    Property of eddiemoney

  • 16.8 Avg MPG
  • Denali

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added Jan 2020 • 42 Fuel-ups

    Property of Teutonics

  • 17.7 Avg MPG
  • Sierra 1500

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Jan 2019 • 183 Fuel-ups

    Property of jered6323

  • 15.3 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
    Added Jan 2018 • 86 Fuel-ups

    Property of nmason42

  • 15.0 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 8 Speed
    Added May 2020 • 22 Fuel-ups

    Property of nkeller32

  • 16.8 Avg MPG
  • Gus’s Denali

    2018 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 8 Speed
    Added May 2019 • 136 Fuel-ups

    Property of enszc

  • 14.4 Avg MPG
  • My Sierra 1500

    2018 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 8 Speed
    Added Sep 2018 • 165 Fuel-ups

    Property of Polar800

  • 15.1 Avg MPG
  • 2018 Sierra 1500

    2018 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 6 Speed Cab & Chassis - Crew Cab
    Added Apr 2018 • 194 Fuel-ups

    Property of iZoomie

  • 17.8 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
  • GMC 1500 4x4

    2018 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Feb 2018 • 135 Fuel-ups

    Property of kiscl

  • 14.9 Avg MPG

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