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2021 GMC Sierra 1500 MPG

Based on data from 249 vehicles, 17,750 fuel-ups and 6,770,554 miles of driving, the 2021 GMC Sierra 1500 gets a combined Avg MPG of 20.33 with a 0.08 MPG margin of error.

Below you can see a distribution of the fuel-ups with 92 outliers (0.52%) removed.

Following shows the average MPG of each of the 249 vehicles in the system.

2021 GMC Sierra 1500s For Sale Nearby

  • My Sierra 1500

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Dec 2022 • 85 Fuel-ups

    Property of Texasoffshore

  • 22.0 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Dec 2020 • 257 Fuel-ups

    Property of SilverSully83

  • 24.2 Avg MPG
  • 2021 GMC Sierra AT4

    2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Feb 2024 • 49 Fuel-ups

    Property of banditz

  • 20.8 Avg MPG
  • '21 White AT4 DuraMax

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Dec 2020 • 132 Fuel-ups

    Property of APokowski

  • 20.6 Avg MPG
  • Dangmc

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Dec 2023 • 3 Fuel-ups

    Property of Dangmc

  • 23.0 Avg MPG
  • Sierra 1500

    2021 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Dec 2020 • 171 Fuel-ups

    Property of rdurbin

  • 15.5 Avg MPG
  • 2021 Sierra 1500

    2021 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Feb 2021 • 149 Fuel-ups

    Property of Bost05

  • 14.5 Avg MPG
  • GMC Sierra 1500

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Nov 2023 • 3 Fuel-ups

    Property of firemech

  • 35.7 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Dec 2021 • 62 Fuel-ups

    Property of dphi201

  • 23.4 Avg MPG
  • Bigfoot

    2021 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Mar 2022 • 75 Fuel-ups

    Property of White-Denali

  • 16.0 Avg MPG
  • My 2021 Sierra 1500

    2021 GMC Sierra 1500 Denali 3,0L L6 DIESEL Automatic 10 Speed
    Added Apr 2021 • 12 Fuel-ups

    Property of shadow_za

  • 23.4 Avg MPG
  • 3.0 AT4

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Sep 2021 • 59 Fuel-ups

    Property of Timmy59360

  • 22.9 Avg MPG
  • Sierra

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Jan 2022 • 72 Fuel-ups

    Property of jc9995

  • 25.5 Avg MPG
  • Thot Yacht

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Jun 2021 • 73 Fuel-ups

    Property of TrevorBarrett

  • 23.7 Avg MPG
  • Arnold

    2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
    Added Nov 2020 • 281 Fuel-ups

    Property of st333

  • 14.7 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Jun 2021 • 137 Fuel-ups

    Property of tgutwein

  • 25.2 Avg MPG
  • GMC AT4

    2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
    Added Apr 2021 • 68 Fuel-ups

    Property of fuelburner

  • 13.4 Avg MPG
  • GMC TOWING

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Aug 2023 • 3 Fuel-ups

    Property of l1tech

  • 13.1 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 10 Speed
    Added Oct 2023 • 8 Fuel-ups

    Property of jiro_franco

  • 14.8 Avg MPG
  • ‘21 GMC Sierra

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Jan 2023 • 51 Fuel-ups

    Property of BigL31

  • 24.9 Avg MPG

Recent Activity

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Tips

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I follow the 26-12 sec rule. taught in the motorcycle safety... ...

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