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2020 GMC Sierra 1500 MPG

Based on data from 189 vehicles, 14,565 fuel-ups and 4,804,521 miles of driving, the 2020 GMC Sierra 1500 gets a combined Avg MPG of 18.24 with a 0.08 MPG margin of error.

Below you can see a distribution of the fuel-ups with 333 outliers (2.24%) removed.

Following shows the average MPG of each of the 189 vehicles in the system.

2020 GMC Sierra 1500s For Sale Nearby

  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Apr 2020 • 234 Fuel-ups

    Property of mjp1850

  • 14.2 Avg MPG
  • 2020 Sierra Denali

    2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Apr 2023 • 55 Fuel-ups

    Property of gksills

  • 19.3 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Aug 2023 • 69 Fuel-ups

    Property of eizan70

  • 15.4 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Jun 2021 • 80 Fuel-ups

    Property of weedtrucker

  • 25.2 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Oct 2020 • 143 Fuel-ups

    Property of mcginnmf16

  • 15.3 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Jul 2022 • 90 Fuel-ups

    Property of A-Aron6

  • 17.0 Avg MPG
  • Babymax

    2020 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
    Added Sep 2021 • 53 Fuel-ups

    Property of M8trix1469

  • 20.7 Avg MPG
  • AT4

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Jul 2020 • 186 Fuel-ups

    Property of JW46

  • 16.4 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
    Added Oct 2020 • 218 Fuel-ups

    Property of Kurrirra

  • 15.5 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed
    Added Aug 2020 • 124 Fuel-ups

    Property of crggmc

  • 15.2 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Sep 2023 • 45 Fuel-ups

    Property of tylerbell

  • 16.8 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Dec 2022 • 103 Fuel-ups

    Property of stuart1943

  • 15.9 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Jul 2020 • 193 Fuel-ups

    Property of JettaFuelMileage

  • 15.4 Avg MPG
  • Leonardo Denali

    2020 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Feb 2023 • 64 Fuel-ups

    Property of Bippin

  • 15.3 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Oct 2020 • 159 Fuel-ups

    Property of surfintx2004

  • 20.0 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Feb 2023 • 98 Fuel-ups

    Property of jwbraam3

  • 16.4 Avg MPG
  • Blanca

    2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Sep 2017 • 23 Fuel-ups

    Property of adolrn

  • 18.0 Avg MPG
  • 2020 GMC Sierra

    2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed
    Added Sep 2020 • 154 Fuel-ups

    Property of jndelisl

  • 17.3 Avg MPG
  • Sierra Denali 1500

    2020 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 8 Speed
    Added Jul 2023 • 15 Fuel-ups

    Property of kcazatk_1

  • 24.4 Avg MPG
  • My Sierra 1500

    2020 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Feb 2020 • 193 Fuel-ups

    Property of bmh4301

  • 13.7 Avg MPG

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