Click here to see important news regarding the aCar App

2021 GMC Sierra 1500 MPG

Based on data from 240 vehicles, 15,882 fuel-ups and 6,057,822 miles of driving, the 2021 GMC Sierra 1500 gets a combined Avg MPG of 20.31 with a 0.09 MPG margin of error.

Below you can see a distribution of the fuel-ups with 86 outliers (0.54%) removed.

Following shows the average MPG of each of the 240 vehicles in the system.

2021 GMC Sierra 1500s For Sale Nearby

  • GMC

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Extended Cab Pickup
    Added Jan 2022 • 53 Fuel-ups

    Property of johnny91750

  • 26.3 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Nov 2023 • 14 Fuel-ups

    Property of aximiliei

  • 19.3 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
    Added Jun 2021 • 285 Fuel-ups

    Property of jtowns

  • 17.0 Avg MPG
  • AT4

    2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Sep 2023 • 65 Fuel-ups

    Property of rockopolster

  • 16.9 Avg MPG
  • Yodha

    2021 GMC Sierra 1500 SLE 2.7L L4 GAS Automatic 8 Speed Extended Cab Pickup
    Added Oct 2021 • 137 Fuel-ups

    Property of YODHA

  • 22.5 Avg MPG
  • White Walker

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Jun 2023 • 48 Fuel-ups

    Property of imca35

  • 22.4 Avg MPG
  • Sierra 1500 Elavation

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Oct 2022 • 58 Fuel-ups

    Property of lj1064

  • 25.9 Avg MPG
  • Whipp'd

    2021 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Jun 2021 • 97 Fuel-ups

    Property of DCsells

  • 14.1 Avg MPG
  • Family Hauler

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Dec 2021 • 70 Fuel-ups

    Property of 2013RAM2500

  • 23.7 Avg MPG
  • 21 Sierra 1500

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Jul 2021 • 77 Fuel-ups

    Property of Corelax

  • 22.2 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
    Added Sep 2023 • 30 Fuel-ups

    Property of MysticMissile4

  • 16.9 Avg MPG
  • Sierra

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added May 2021 • 53 Fuel-ups

    Property of Adam2kSS

  • 21.9 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added May 2023 • 28 Fuel-ups

    Property of Griffis89

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

    2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
    Added Aug 2023 • 27 Fuel-ups

    Property of blrains706

  • 24.1 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Oct 2023 • 86 Fuel-ups

    Property of gdmannjr

  • 16.3 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Nov 2021 • 52 Fuel-ups

    Property of MLTGMC

  • 26.8 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Sep 2021 • 167 Fuel-ups

    Property of Biggs2021

  • 26.1 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Dec 2020 • 105 Fuel-ups

    Property of travreed22

  • 23.2 Avg MPG
  • 2021 Sierra 1500

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Sep 2022 • 78 Fuel-ups

    Property of milcher

  • 21.2 Avg MPG
  • GMC Sierra

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added May 2021 • 58 Fuel-ups

    Property of AFowler

  • 24.0 Avg MPG

Recent Activity

from other GMC Sierra 1500 vehicles (View All)

Tips

Be nice to your clutch

On the occasions you are stopped at a traffic light, put the... ...

by storeman

Read more tips