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2020 GMC Sierra 2500 HD MPG

Based on data from 37 vehicles, 1,983 fuel-ups and 728,044 miles of driving, the 2020 GMC Sierra 2500 HD gets a combined Avg MPG of 14.27 with a 0.15 MPG margin of error.

Below you can see a distribution of the fuel-ups with 21 outliers (1.05%) removed.

Following shows the average MPG of each of the 37 vehicles in the system.

2020 GMC Sierra 2500 HDs For Sale Nearby

  • Granite AT4

    2020 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Oct 2020 • 94 Fuel-ups

    Property of NHATC

  • 11.2 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 6 Speed
    Added Mar 2022 • 72 Fuel-ups

    Property of hoodsh

  • 14.3 Avg MPG
  • BatMobile II

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 126 Fuel-ups

    Property of Rocinante1

  • 15.9 Avg MPG
  • COVID Cruiser

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 144 Fuel-ups

    Property of jambiefsj

  • 16.8 Avg MPG
  • AT4

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Jul 2022 • 26 Fuel-ups

    Property of Dziuky

  • 16.6 Avg MPG
  • Duramax

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added May 2021 • 74 Fuel-ups

    Property of Silentfun65

  • 14.6 Avg MPG
  • Big Red II

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Aug 2020 • 124 Fuel-ups

    Property of TackleBox

  • 13.9 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Jan 2022 • 74 Fuel-ups

    Property of BPowAT4HD

  • 16.4 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Jan 2021 • 79 Fuel-ups

    Property of DMaxTRR

  • 16.1 Avg MPG
  • GMC AT4

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2022 • 29 Fuel-ups

    Property of furlofoder

  • 13.8 Avg MPG
  • FLWKS 2500HD AT4

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2020 • 98 Fuel-ups

    Property of hockeyvillian

  • 14.6 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Sep 2020 • 129 Fuel-ups

    Property of Xaositek

  • 16.2 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Aug 2022 • 22 Fuel-ups

    Property of jeepin13

  • 14.7 Avg MPG
  • Red

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 132 Fuel-ups

    Property of llljrmd

  • 16.3 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jan 2020 • 71 Fuel-ups

    Property of zardoz5

  • 15.1 Avg MPG
  • Neil GMC 2500HD

    2020 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Nov 2020 • 161 Fuel-ups

    Property of neilalvares

  • 13.3 Avg MPG
  • 2020 Denali 2500 HD

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

    Property of maaiman

  • 15.8 Avg MPG
  • 2020 Sierra 2500 Duramax

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Dec 2019 • 180 Fuel-ups

    Property of mnoland2000

  • 13.0 Avg MPG
  • Sierra 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 53 Fuel-ups

    Property of bto71

  • 13.8 Avg MPG
  • Gallo Negro

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added May 2022 • 6 Fuel-ups

    Property of doakman1

  • 11.6 Avg MPG

Recent Activity

from other GMC Sierra 2500 HD vehicles (View All)

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Anticipate, don't break hard, don't accelerate hard

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