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2021 GMC Sierra 1500 MPG

Based on data from 252 vehicles, 18,269 fuel-ups and 6,986,591 miles of driving, the 2021 GMC Sierra 1500 gets a combined Avg MPG of 20.37 with a 0.08 MPG margin of error.

Below you can see a distribution of the fuel-ups with 94 outliers (0.51%) removed.

Following shows the average MPG of each of the 252 vehicles in the system.

2021 GMC Sierra 1500s For Sale Nearby

  • My Sierra 1500

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Nov 2021 • 61 Fuel-ups

    Property of MLTGMC

  • 27.1 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Feb 2021 • 117 Fuel-ups

    Property of mastrodan3rd

  • 17.5 Avg MPG
  • GMC Sierra 1500 Denali

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Dec 2021 • 156 Fuel-ups

    Property of Slugster

  • 23.7 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
    Added Jan 2021 • 189 Fuel-ups

    Property of yesubyllib

  • 23.2 Avg MPG
  • Brown D

    2021 GMC Sierra 1500 SLE 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added May 2021 • 115 Fuel-ups

    Property of sc402443

  • 24.3 Avg MPG
  • Sierra 1500

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Extended Cab Pickup
    Added Dec 2023 • 63 Fuel-ups

    Property of jameshawco

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

    2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
    Added Aug 2023 • 33 Fuel-ups

    Property of blrains706

  • 23.9 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
    Added Oct 2022 • 48 Fuel-ups

    Property of mnm6080

  • 24.1 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Nov 2024 • 239 Fuel-ups

    Property of AT4MPG

  • 25.1 Avg MPG
  • Sierra Denali

    2021 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
    Added May 2022 • 29 Fuel-ups

    Property of bdoooh

  • 16.0 Avg MPG
  • GMC Denali

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Jul 2022 • 59 Fuel-ups

    Property of gtanner

  • 27.2 Avg MPG
  • Sierra AT4

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Aug 2024 • 4 Fuel-ups

    Property of rendrog

  • 23.8 Avg MPG
  • Sierra 1500 Duramax

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Jul 2022 • 161 Fuel-ups

    Property of jdrockin

  • 24.5 Avg MPG
  • CarbonPro GMC

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Mar 2022 • 104 Fuel-ups

    Property of sefowler

  • 24.6 Avg MPG
  • GMC

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Extended Cab Pickup
    Added Jan 2022 • 60 Fuel-ups

    Property of johnny91750

  • 25.9 Avg MPG
  • Denali

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

    Property of stagrlee

  • 18.6 Avg MPG
  • 2021 AT4

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Sep 2021 • 51 Fuel-ups

    Property of rvckstar

  • 22.7 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Dec 2021 • 57 Fuel-ups

    Property of jps4di

  • 23.7 Avg MPG
  • Caroline

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Feb 2023 • 43 Fuel-ups

    Property of Ryharris

  • 21.9 Avg MPG
  • Max

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Jun 2024 • 5 Fuel-ups

    Property of jluyk

  • 27.2 Avg MPG

Recent Activity

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