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2020 GMC Sierra 2500 HD MPG

Based on data from 29 vehicles, 729 fuel-ups and 273,066 miles of driving, the 2020 GMC Sierra 2500 HD gets a combined Avg MPG of 14.49 with a 0.25 MPG margin of error.

Below you can see a distribution of the fuel-ups with 6 outliers (0.82%) removed.

Following shows the average MPG of each of the 29 vehicles in the system.

2020 GMC Sierra 2500 HDs For Sale Nearby

  • FURY

    2020 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
    Added Sep 2020 • 22 Fuel-ups

    Property of Thumpy

  • 14.5 Avg MPG
  • 2020 Denali 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2020 • 27 Fuel-ups

    Property of maaiman

  • 14.8 Avg MPG
  • L5P

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Apr 2021 • 8 Fuel-ups

    Property of jwmontoya

  • 13.8 Avg MPG
  • Big Red II

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Aug 2020 • 29 Fuel-ups

    Property of TackleBox

  • 13.3 Avg MPG
  • COVID Cruiser

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 52 Fuel-ups

    Property of jambiefsj

  • 16.3 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Sep 2020 • 60 Fuel-ups

    Property of Xaositek

  • 16.3 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 6 Speed
    Added May 2020 • 61 Fuel-ups

    Property of uncledot

  • 13.3 Avg MPG
  • BatMobile II

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 46 Fuel-ups

    Property of Rocinante1

  • 15.4 Avg MPG
  • 2020 Sierra 2500 Duramax

    2020 GMC Sierra 2500 HD Denali Crew Cab Pickup
    Added Dec 2019 • 90 Fuel-ups

    Property of mnoland2000

  • 13.2 Avg MPG
  • Neil GMC 2500HD

    2020 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Nov 2020 • 21 Fuel-ups

    Property of neilalvares

  • 13.1 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jan 2020 • 33 Fuel-ups

    Property of zardoz5

  • 16.1 Avg MPG
  • FLWKS 2500HD AT4

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2020 • 41 Fuel-ups

    Property of hockeyvillian

  • 15.5 Avg MPG
  • Red

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 56 Fuel-ups

    Property of llljrmd

  • 16.3 Avg MPG
  • Cold Air Duramax

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added May 2021 • 9 Fuel-ups

    Property of Silentfun65

  • 13.6 Avg MPG
  • Granite AT4

    2020 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 6 Speed Crew Cab Pickup
    Added Oct 2020 • 23 Fuel-ups

    Property of NHATC

  • 11.0 Avg MPG
  • Denali 2500HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Nov 2020 • 12 Fuel-ups

    Property of eastcoasthd

  • 15.8 Avg MPG
  • Blue Beast

    2020 GMC Sierra 2500 HD SLT 6.6L V8 GAS Automatic 6 Speed Extended Cab Pickup
    Added Sep 2020 • 11 Fuel-ups

    Property of JustinID

  • 14.7 Avg MPG
  • Sierra 2500HD Duramax

    2020 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Aug 2020 • 38 Fuel-ups

    Property of RamMan88

  • 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 • 32 Fuel-ups

    Property of DMaxTRR

  • 15.7 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added May 2021 • 4 Fuel-ups

    Property of vepil

  • 16.2 Avg MPG

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