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2021 GMC Sierra 1500 MPG

Based on data from 220 vehicles, 12,765 fuel-ups and 4,841,994 miles of driving, the 2021 GMC Sierra 1500 gets a combined Avg MPG of 20.35 with a 0.10 MPG margin of error.

Below you can see a distribution of the fuel-ups with 64 outliers (0.50%) removed.

Following shows the average MPG of each of the 220 vehicles in the system.

2021 GMC Sierra 1500s For Sale Nearby

  • My Sierra 1500

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Jun 2021 • 96 Fuel-ups

    Property of sooner2016

  • 25.3 Avg MPG
  • My Sierra 1500 AT4

    2021 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Jan 2021 • 105 Fuel-ups

    Property of sfwalters

  • 18.8 Avg MPG
  • AT4

    2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Sep 2023 • 18 Fuel-ups

    Property of rockopolster

  • 18.1 Avg MPG
  • 2021 Elevation

    2021 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Jun 2021 • 115 Fuel-ups

    Property of craigw76

  • 18.7 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 10 Speed
    Added Oct 2023 • 6 Fuel-ups

    Property of jiro_franco

  • 14.3 Avg MPG
  • GMC

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Extended Cab Pickup
    Added Jan 2022 • 40 Fuel-ups

    Property of johnny91750

  • 26.1 Avg MPG
  • Sierra Duramax

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Oct 2022 • 25 Fuel-ups

    Property of BBJ1

  • 21.9 Avg MPG
  • 2021 GMC Sierra SLT 1500 4WD

    2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
    Added Aug 2023 • 6 Fuel-ups

    Property of blrains706

  • 24.6 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Mar 2021 • 184 Fuel-ups

    Property of ryank880

  • 21.4 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed
    Added Jan 2021 • 77 Fuel-ups

    Property of wholyon

  • 17.7 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Dec 2020 • 232 Fuel-ups

    Property of SilverSully83

  • 24.3 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Jul 2021 • 158 Fuel-ups

    Property of AT4-GLI

  • 23.4 Avg MPG
  • 2021 Sierra 1500

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Sep 2022 • 37 Fuel-ups

    Property of milcher

  • 21.7 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Jul 2021 • 154 Fuel-ups

    Property of Luddy

  • 26.0 Avg MPG
  • 21 GMC Sierra AT4

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 8 Speed
    Added Oct 2021 • 63 Fuel-ups

    Property of bhess19

  • 22.3 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Jun 2021 • 130 Fuel-ups

    Property of tgutwein

  • 25.2 Avg MPG
  • GMC Blackout

    2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
    Added Aug 2021 • 98 Fuel-ups

    Property of brockon

  • 20.7 Avg MPG
  • GMC Denali

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Jul 2022 • 32 Fuel-ups

    Property of gtanner

  • 27.2 Avg MPG
  • AT4 Gray Dragon

    2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 8 Speed
    Added Aug 2021 • 135 Fuel-ups

    Property of tank91w

  • 15.7 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
    Added Aug 2021 • 94 Fuel-ups

    Property of jmartinezflyer

  • 16.0 Avg MPG

Recent Activity

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Plan ahead and don't brake or accelerate hard or unnecessari... ...

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