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2021 GMC Sierra 1500 MPG

Based on data from 250 vehicles, 17,775 fuel-ups and 6,779,747 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 (0.51%) removed.

Following shows the average MPG of each of the 250 vehicles in the system.

2021 GMC Sierra 1500s For Sale Nearby

  • ‘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
  • 2021 GMC

    2021 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
    Added Nov 2023 • 32 Fuel-ups

    Property of JayG60

  • 21.8 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 8 Speed
    Added Oct 2020 • 124 Fuel-ups

    Property of jleehop

  • 25.2 Avg MPG
  • AT4

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Dec 2021 • 41 Fuel-ups

    Property of dismonio

  • 24.0 Avg MPG
  • GMC

    2021 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Jul 2021 • 108 Fuel-ups

    Property of edwin191

  • 18.5 Avg MPG
  • MyGMCDiesel

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Extended Cab Pickup
    Added Feb 2021 • 153 Fuel-ups

    Property of IndyLM2GMC

  • 23.9 Avg MPG
  • Maverick

    2021 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Feb 2021 • 140 Fuel-ups

    Property of mvprealestate

  • 15.6 Avg MPG
  • Ray’s Truck

    2021 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed
    Added Jun 2023 • 8 Fuel-ups

    Property of Wrongway88

  • 13.5 Avg MPG
  • GMC Sierra 1500 Elevation

    2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
    Added Dec 2021 • 35 Fuel-ups

    Property of amtrak8

  • 24.5 Avg MPG
  • Presious

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Jun 2021 • 92 Fuel-ups

    Property of njaybong

  • 24.9 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
    Added Apr 2021 • 84 Fuel-ups

    Property of joh02051

  • 19.3 Avg MPG
  • Sierra

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Apr 2023 • 11 Fuel-ups

    Property of shiftracer247

  • 19.9 Avg MPG
  • My Sierra 1500

    2021 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added Apr 2021 • 63 Fuel-ups

    Property of titan1727

  • 17.6 Avg MPG
  • A19639 2021 Black Sierra 1500

    2021 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 10 Speed
    Added Mar 2023 • 17 Fuel-ups

    Property of Robbo1968

  • 6.5 Avg MPG
  • AT4

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Apr 2021 • 52 Fuel-ups

    Property of jbainton

  • 24.2 Avg MPG
  • Old

    2021 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
    Added May 2021 • 123 Fuel-ups

    Property of cdean72

  • 14.2 Avg MPG
  • 21 Sierra

    2021 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
    Added Nov 2020 • 84 Fuel-ups

    Property of wildman22john

  • 15.6 Avg MPG
  • 2021 Sierra 1500

    2021 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
    Added Dec 2020 • 70 Fuel-ups

    Property of bennybeat

  • 17.0 Avg MPG
  • Blue

    2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Jan 2022 • 32 Fuel-ups

    Property of gregair310

  • 24.5 Avg MPG
  • My Sierra 1500 AT4

    2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
    Added Sep 2021 • 50 Fuel-ups

    Property of robtwillis

  • 18.3 Avg MPG

Recent Activity

from other GMC Sierra 1500 vehicles (View All)

Tips

Ease off the brakes

The moment you see a stop sign or red light (or a turn you h... ...

by jjmatt33

Read more tips