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2021 GMC Sierra 2500 HD MPG

Based on data from 51 vehicles, 2,037 fuel-ups and 640,314 miles of driving, the 2021 GMC Sierra 2500 HD gets a combined Avg MPG of 13.10 with a 0.16 MPG margin of error.

Below you can see a distribution of the fuel-ups with 7 outliers (0.34%) removed.

Following shows the average MPG of each of the 51 vehicles in the system.

2021 GMC Sierra 2500 HDs For Sale Nearby

  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Dec 2020 • 80 Fuel-ups

    Property of russellruetz

  • 13.7 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 10 Speed
    Added Oct 2021 • 77 Fuel-ups

    Property of bdamats

  • 11.3 Avg MPG
  • DENALI 2021

    2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Dec 2020 • 57 Fuel-ups

    Property of rivcoinc

  • 14.2 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 6 Speed
    Added May 2021 • 119 Fuel-ups

    Property of Buellx72

  • 11.4 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 10 Speed
    Added Jan 2023 • 12 Fuel-ups

    Property of Croybal06

  • 15.1 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 6 Speed
    Added Jun 2021 • 100 Fuel-ups

    Property of gregnola

  • 12.4 Avg MPG
  • GMC Sierra 2500 AT4

    2021 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 6 Speed
    Added Mar 2022 • 48 Fuel-ups

    Property of 22GMCAT4HD

  • 13.1 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD SLT 6.6L V8 GAS Automatic 6 Speed
    Added Jan 2021 • 23 Fuel-ups

    Property of NGreen08

  • 11.1 Avg MPG
  • AT4

    2021 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Oct 2022 • 23 Fuel-ups

    Property of scrabble890

  • 15.0 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Dec 2022 • 8 Fuel-ups

    Property of gjonesy12

  • 14.2 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD Denali 6.6L V8 GAS Automatic 6 Speed
    Added Aug 2021 • 26 Fuel-ups

    Property of drjim

  • 11.7 Avg MPG
  • Black GMC Truck

    2021 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 6 Speed Extended Cab Pickup
    Added May 2021 • 32 Fuel-ups

    Property of Zeak1

  • 14.1 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD SLT 6.6L V8 GAS Automatic 6 Speed
    Added Jan 2021 • 118 Fuel-ups

    Property of kbeazley

  • 10.4 Avg MPG
  • 2021 Sierra Denali HD

    2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Dec 2020 • 106 Fuel-ups

    Property of LynnE24

  • 14.5 Avg MPG
  • 2021 Denali HD

    2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Nov 2020 • 57 Fuel-ups

    Property of DenaliDad

  • 14.3 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD Denali 6.6L V8 GAS Automatic 6 Speed
    Added Nov 2021 • 64 Fuel-ups

    Property of Danm1228

  • 11.5 Avg MPG
  • 2021 Sierra Denali HD

    2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Feb 2021 • 82 Fuel-ups

    Property of ccc2511

  • 16.0 Avg MPG
  • 2021 2500HD Denali

    2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Apr 2021 • 91 Fuel-ups

    Property of DP68

  • 17.0 Avg MPG
  • 2021

    2021 GMC Sierra 2500 HD Denali Crew Cab Pickup
    Added Dec 2020 • 98 Fuel-ups

    Property of lampmant

  • 12.7 Avg MPG
  • AT4 Whore

    2021 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2021 • 76 Fuel-ups

    Property of pigpen23

  • 12.5 Avg MPG

Recent Activity

from other GMC Sierra 2500 HD vehicles (View All)

Tips

Turn Off The Radio!!!

I find I get the best mileage "listening" to my motor. That ... ...

by sko110569

Read more tips