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2020 GMC Sierra 1500 MPG

Based on data from 186 vehicles, 13,370 fuel-ups and 4,417,914 miles of driving, the 2020 GMC Sierra 1500 gets a combined Avg MPG of 18.22 with a 0.09 MPG margin of error.

Below you can see a distribution of the fuel-ups with 311 outliers (2.27%) removed.

Following shows the average MPG of each of the 186 vehicles in the system.

2020 GMC Sierra 1500s For Sale Nearby

  • Sierra 1500

    2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added May 2020 • 220 Fuel-ups

    Property of Boatman744

  • 16.9 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
    Added Oct 2020 • 203 Fuel-ups

    Property of Kurrirra

  • 15.5 Avg MPG
  • 2020 Sierra

    2020 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed Extended Cab Pickup
    Added Feb 2020 • 227 Fuel-ups

    Property of jamesthebikeguy

  • 19.6 Avg MPG
  • Truck

    2020 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 9 Speed Extended Cab Pickup
    Added Aug 2020 • 173 Fuel-ups

    Property of Bw1881

  • 14.8 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
    Added Dec 2023 • 13 Fuel-ups

    Property of sslack1970

  • 17.3 Avg MPG
  • AT4

    2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Aug 2020 • 134 Fuel-ups

    Property of riefej80

  • 20.0 Avg MPG
  • Sierra AT4

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Apr 2020 • 122 Fuel-ups

    Property of bgweed

  • 15.5 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Apr 2020 • 257 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 Apr 2020 • 209 Fuel-ups

    Property of mjp1850

  • 14.2 Avg MPG
  • AT4

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Sep 2022 • 107 Fuel-ups

    Property of srlew

  • 15.5 Avg MPG
  • Sierra

    2020 GMC Sierra 1500 Elevation
    Added Nov 2019 • 235 Fuel-ups

    Property of nightrock548

  • 16.9 Avg MPG
  • Sierra 1500 AT4

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Aug 2020 • 209 Fuel-ups

    Property of msteiner17

  • 17.0 Avg MPG
  • 2020 GMC AT4

    2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Mar 2023 • 26 Fuel-ups

    Property of Risser

  • 24.4 Avg MPG
  • GMC Sierra 1500 AT4

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Apr 2021 • 120 Fuel-ups

    Property of AbnZoomie

  • 15.7 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Sep 2020 • 193 Fuel-ups

    Property of mbnereim

  • 16.4 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Aug 2023 • 39 Fuel-ups

    Property of eizan70

  • 17.1 Avg MPG
  • AT4

    2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Dec 2020 • 72 Fuel-ups

    Property of rmsevo

  • 21.0 Avg MPG
  • 2020 Sierra 1500 AT4

    2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Sep 2020 • 105 Fuel-ups

    Property of jhhaney97

  • 23.8 Avg MPG
  • Sierra 1500

    2020 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
    Added Feb 2021 • 149 Fuel-ups

    Property of bmrohrer

  • 14.9 Avg MPG
  • 2020 GMC Sierra

    2020 GMC Sierra 1500 Elevation 5.3L V8 GAS Crew Cab Pickup
    Added Dec 2023 • 11 Fuel-ups

    Property of cmore

  • 16.9 Avg MPG

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