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2021 GMC Sierra 2500 HD MPG

Based on data from 71 vehicles, 4,523 fuel-ups and 1,457,483 miles of driving, the 2021 GMC Sierra 2500 HD gets a combined Avg MPG of 13.18 with a 0.11 MPG margin of error.

Below you can see a distribution of the fuel-ups with 19 outliers (0.42%) removed.

Following shows the average MPG of each of the 71 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 Apr 2023 • 111 Fuel-ups

    Property of bcfiremedic

  • 11.9 Avg MPG
  • 2021 Sierra Denali HD

    2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Dec 2020 • 208 Fuel-ups

    Property of LynnE24

  • 14.2 Avg MPG
  • 2021 GMC Sierra 2500 HD

    2021 GMC Sierra 2500 HD 6.6L V8 GAS Automatic 6 Speed
    Added Mar 2021 • 75 Fuel-ups

    Property of Hay_Man_40

  • 11.4 Avg MPG
  • 2021 Denali HD

    2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Nov 2020 • 102 Fuel-ups

    Property of DenaliDad

  • 14.7 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD SLT 6.6L V8 GAS Automatic 6 Speed
    Added Jan 2021 • 251 Fuel-ups

    Property of kbeazley

  • 10.7 Avg MPG
  • Dads Sierra 2500 HD

    2021 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
    Added Jan 2025 • 15 Fuel-ups

    Property of WillyM

  • 12.0 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Jan 2025 • 10 Fuel-ups

    Property of keenwyatt

  • 15.6 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Sep 2023 • 186 Fuel-ups

    Property of SeB21

  • 17.1 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2024 • 35 Fuel-ups

    Property of crossfamily

  • 16.3 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 6 Speed
    Added May 2021 • 256 Fuel-ups

    Property of Buellx72

  • 11.3 Avg MPG
  • Big Bubba. My Sierra 2500 HD

    2021 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2021 • 114 Fuel-ups

    Property of moose57

  • 16.5 Avg MPG
  • GMC

    2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jul 2024 • 9 Fuel-ups

    Property of JK27

  • 13.0 Avg MPG
  • AT4 Whore

    2021 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2021 • 165 Fuel-ups

    Property of pigpen23

  • 12.4 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 6 Speed
    Added Nov 2024 • 19 Fuel-ups

    Property of Anticyclone

  • 11.0 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 6 Speed
    Added Jun 2021 • 200 Fuel-ups

    Property of gregnola

  • 12.0 Avg MPG
  • GMC AT4 - 21

    2021 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Sep 2024 • 6 Fuel-ups

    Property of Landmans

  • 14.1 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 10 Speed
    Added Oct 2021 • 169 Fuel-ups

    Property of bdamats

  • 11.1 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2023 • 26 Fuel-ups

    Property of egobuster1

  • 14.8 Avg MPG
  • My Sierra 2500 HD

    2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jul 2024 • 32 Fuel-ups

    Property of josterhout1

  • 15.4 Avg MPG
  • 2021 Sierra 2500HD

    2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Jan 2024 • 61 Fuel-ups

    Property of Bost05

  • 12.6 Avg MPG

Recent Activity

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