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2020 GMC Sierra 1500 MPG

Based on data from 160 vehicles, 9,019 fuel-ups and 3,057,168 miles of driving, the 2020 GMC Sierra 1500 gets a combined Avg MPG of 18.55 with a 0.11 MPG margin of error.

Below you can see a distribution of the fuel-ups with 90 outliers (0.99%) removed.

Following shows the average MPG of each of the 160 vehicles in the system.

2020 GMC Sierra 1500s For Sale Nearby

  • Sierra 1500

    2020 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
    Added Feb 2021 • 84 Fuel-ups

    Property of bmrohrer

  • 15.2 Avg MPG
  • Duramax

    2020 GMC Sierra 1500 SLE 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Apr 2020 • 122 Fuel-ups

    Property of mattb5150

  • 19.9 Avg MPG
  • GMC Sierra 1500 AT4

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Apr 2021 • 79 Fuel-ups

    Property of AbnZoomie

  • 15.0 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Mar 2022 • 39 Fuel-ups

    Property of Mazerk

  • 24.7 Avg MPG
  • Sierra 1500

    2020 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
    Added Oct 2020 • 110 Fuel-ups

    Property of pinkdream

  • 16.1 Avg MPG
  • GMC Sierra

    2020 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Sep 2020 • 75 Fuel-ups

    Property of Bensontbjj1

  • 17.4 Avg MPG
  • 20 Sierra 1500 SLT

    2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Sep 2020 • 101 Fuel-ups

    Property of clemmer98

  • 15.9 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Jul 2020 • 144 Fuel-ups

    Property of JettaFuelMileage

  • 15.7 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
    Added Dec 2021 • 32 Fuel-ups

    Property of rudog805

  • 18.2 Avg MPG
  • AT4

    2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Aug 2020 • 81 Fuel-ups

    Property of riefej80

  • 19.9 Avg MPG
  • Big Gray

    2020 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 8 Speed
    Added Oct 2020 • 84 Fuel-ups

    Property of wirowek

  • 23.6 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Apr 2020 • 158 Fuel-ups

    Property of GRCubsfan

  • 17.0 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Jul 2022 • 14 Fuel-ups

    Property of A-Aron6

  • 17.9 Avg MPG
  • Sierra

    2020 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Feb 2020 • 168 Fuel-ups

    Property of Bowtie76

  • 13.9 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Feb 2020 • 107 Fuel-ups

    Property of bmh4301

  • 14.4 Avg MPG
  • Denna

    2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Dec 2020 • 85 Fuel-ups

    Property of knightbsandy

  • 24.1 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Jul 2022 • 70 Fuel-ups

    Property of jmungaray

  • 14.4 Avg MPG
  • Truck

    2020 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 9 Speed Extended Cab Pickup
    Added Aug 2020 • 105 Fuel-ups

    Property of Bw1881

  • 15.2 Avg MPG
  • Sierra 1500 SLT

    2020 GMC Sierra 1500 SLT
    Added Jan 2020 • 199 Fuel-ups

    Property of bdenman

  • 20.4 Avg MPG
  • Sierra

    2020 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
    Added Aug 2020 • 75 Fuel-ups

    Property of Mocek

  • 19.0 Avg MPG

Recent Activity

from other GMC Sierra 1500 vehicles (View All)

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