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2020 GMC Sierra 2500 HD MPG

Based on data from 18 vehicles, 237 fuel-ups and 89,539 miles of driving, the 2020 GMC Sierra 2500 HD gets a combined Avg MPG of 14.58 with a 0.45 MPG margin of error.

Below you can see a distribution of the fuel-ups with 3 outliers (1.25%) removed.

Following shows the average MPG of each of the 18 vehicles in the system.

2020 GMC Sierra 2500 HDs For Sale Nearby

  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Sep 2020 • 14 Fuel-ups

    Property of Xaositek

  • 16.3 Avg MPG
  • Sierra 2500HD Duramax

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

    Property of RamMan88

  • 17.0 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jan 2020 • 14 Fuel-ups

    Property of zardoz5

  • 14.8 Avg MPG
  • 2020 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jul 2020 • 18 Fuel-ups

    Property of scummings85

  • 11.3 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 6 Speed
    Added May 2020 • 30 Fuel-ups

    Property of uncledot

  • 13.3 Avg MPG
  • Sierra 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 15 Fuel-ups

    Property of bto71

  • 12.9 Avg MPG
  • My Sierra 2500 HD

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

    Property of powell1983

  • 16.5 Avg MPG
  • COVID Cruiser

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 28 Fuel-ups

    Property of jambiefsj

  • 15.5 Avg MPG
  • Big Red II

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Aug 2020 • 6 Fuel-ups

    Property of TackleBox

  • 13.3 Avg MPG
  • BatMobile II

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 26 Fuel-ups

    Property of Rocinante1

  • 13.8 Avg MPG
  • Red

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

    Property of llljrmd

  • 16.3 Avg MPG
  • FLWKS 2500HD AT4

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2020 • 18 Fuel-ups

    Property of hockeyvillian

  • 16.2 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 GAS Automatic 6 Speed
    Added Aug 2020 • 4 Fuel-ups

    Property of shreff86

  • 12.5 Avg MPG
  • 2020 Denali 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2020 • 11 Fuel-ups

    Property of maaiman

  • 15.0 Avg MPG
  • FURY

    2020 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
    Added Sep 2020 • 5 Fuel-ups

    Property of Thumpy

  • 14.7 Avg MPG
  • Wanda

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Feb 2020 • 32 Fuel-ups

    Property of amepena

  • 17.9 Avg MPG
  • Sierra 2500HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added May 2020 • 8 Fuel-ups

    Property of M3atEater

  • 18.9 Avg MPG
  • Beastly Bunny

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic Crew Cab Pickup
    Added Feb 2020 • 6 Fuel-ups

    Property of Jvorpagel

  • 14.3 Avg MPG

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