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2020 GMC Sierra 2500 HD MPG

Based on data from 37 vehicles, 1,711 fuel-ups and 629,008 miles of driving, the 2020 GMC Sierra 2500 HD gets a combined Avg MPG of 14.26 with a 0.16 MPG margin of error.

Below you can see a distribution of the fuel-ups with 19 outliers (1.10%) removed.

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

2020 GMC Sierra 2500 HDs For Sale Nearby

  • Sierra 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 47 Fuel-ups

    Property of bto71

  • 13.7 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Aug 2022 • 9 Fuel-ups

    Property of jeepin13

  • 12.7 Avg MPG
  • AT4

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Jul 2022 • 13 Fuel-ups

    Property of Dziuky

  • 17.2 Avg MPG
  • L5P

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Apr 2021 • 37 Fuel-ups

    Property of jwmontoya

  • 14.4 Avg MPG
  • BatMobile II

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 111 Fuel-ups

    Property of Rocinante1

  • 15.7 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Jan 2022 • 50 Fuel-ups

    Property of BPowAT4HD

  • 16.3 Avg MPG
  • COVID Cruiser

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

    Property of jambiefsj

  • 17.0 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 • 163 Fuel-ups

    Property of mnoland2000

  • 13.0 Avg MPG
  • GMC AT4

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2022 • 15 Fuel-ups

    Property of furlofoder

  • 12.1 Avg MPG
  • Neil GMC 2500HD

    2020 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Nov 2020 • 132 Fuel-ups

    Property of neilalvares

  • 13.2 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 6 Speed
    Added Mar 2022 • 47 Fuel-ups

    Property of hoodsh

  • 14.4 Avg MPG
  • Big Red II

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

    Property of TackleBox

  • 14.0 Avg MPG
  • FLWKS 2500HD AT4

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2020 • 83 Fuel-ups

    Property of hockeyvillian

  • 14.6 Avg MPG
  • Red

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 117 Fuel-ups

    Property of llljrmd

  • 16.4 Avg MPG
  • Blue Beast

    2020 GMC Sierra 2500 HD SLT 6.6L V8 GAS Automatic 6 Speed Extended Cab Pickup
    Added Sep 2020 • 42 Fuel-ups

    Property of JustinID

  • 13.6 Avg MPG
  • Duramax

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added May 2021 • 69 Fuel-ups

    Property of Silentfun65

  • 14.5 Avg MPG
  • Gallo Negro

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added May 2022 • 3 Fuel-ups

    Property of doakman1

  • 11.3 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 • 71 Fuel-ups

    Property of DMaxTRR

  • 16.2 Avg MPG
  • GMC AT4

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Nov 2021 • 38 Fuel-ups

    Property of gil_bradshaw

  • 15.6 Avg MPG
  • Granite AT4

    2020 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Oct 2020 • 75 Fuel-ups

    Property of NHATC

  • 11.1 Avg MPG

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