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2020 GMC Sierra 3500 HD MPG

Based on data from 42 vehicles, 2,307 fuel-ups and 824,345 miles of driving, the 2020 GMC Sierra 3500 HD gets a combined Avg MPG of 13.25 with a 0.16 MPG margin of error.

Below you can see a distribution of the fuel-ups with 53 outliers (2.25%) removed.

Following shows the average MPG of each of the 42 vehicles in the system.

2020 GMC Sierra 3500 HDs For Sale Nearby

  • My Sierra 3500 HD

    2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jul 2020 • 136 Fuel-ups

    Property of hotsauce8815

  • 12.2 Avg MPG
  • My Sierra 3500 HD

    2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Mar 2024 • 6 Fuel-ups

    Property of mlgriffin

  • 15.8 Avg MPG
  • My Sierra 3500 HD

    2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2020 • 152 Fuel-ups

    Property of fox454

  • 15.1 Avg MPG
  • My Denali

    2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Mar 2020 • 109 Fuel-ups

    Property of cmayfield682

  • 17.2 Avg MPG
  • My Sierra 3500 HD

    2020 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 41 Fuel-ups

    Property of freedom2020

  • 8.2 Avg MPG
  • My Sierra 3500 HD #1

    2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Nov 2022 • 3 Fuel-ups

    Property of Blueyfella

  • 5.7 Avg MPG
  • My Sierra 3500 HD

    2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2022 • 26 Fuel-ups

    Property of s10stylez

  • 15.2 Avg MPG
  • My Denali 3500HD

    2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2021 • 43 Fuel-ups

    Property of williamsm5813

  • 13.6 Avg MPG
  • My Sierra 3500 HD

    2020 GMC Sierra 3500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Jan 2022 • 66 Fuel-ups

    Property of Grunnsetning

  • 13.6 Avg MPG
  • Big Booty L5P

    2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added May 2021 • 26 Fuel-ups

    Property of Bigbooty

  • 10.8 Avg MPG
  • My Sierra 3500 HD

    2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2020 • 29 Fuel-ups

    Property of Blueyfella

  • 15.1 Avg MPG
  • My Sierra 3500 HD

    2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Sep 2020 • 24 Fuel-ups

    Property of Camstyn

  • 14.7 Avg MPG
  • Sierra 3500 Denali HD

    2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Dec 2020 • 81 Fuel-ups

    Property of voylesjake

  • 15.3 Avg MPG
  • My Sierra 3500 HD

    2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jan 2020 • 59 Fuel-ups

    Property of spence8870

  • 15.9 Avg MPG
  • My Sierra 3500 HD

    2020 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2021 • 24 Fuel-ups

    Property of chris129

  • 14.7 Avg MPG
  • My Sierra 3500 HD

    2020 GMC Sierra 3500 HD 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2021 • 3 Fuel-ups

    Property of trubluluder93

  • 8.3 Avg MPG
  • My Sierra 3500 HD

    2020 GMC Sierra 3500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Mar 2021 • 5 Fuel-ups

    Property of saulG96

  • 13.4 Avg MPG
  • Becca

    2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Jan 2020 • 6 Fuel-ups

    Property of Gunslinger4

  • 16.5 Avg MPG
  • AT 4 3500 HD

    2020 GMC Sierra 3500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Sep 2020 • 16 Fuel-ups

    Property of Jeferon1

  • 12.1 Avg MPG
  • My Sierra 3500 HD

    2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Nov 2020 • 9 Fuel-ups

    Property of aricb23

  • 13.7 Avg MPG

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