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2020 GMC Sierra 2500 HD MPG

Based on data from 37 vehicles, 1,865 fuel-ups and 686,831 miles of driving, the 2020 GMC Sierra 2500 HD gets a combined Avg MPG of 14.28 with a 0.16 MPG margin of error.

Below you can see a distribution of the fuel-ups with 20 outliers (1.06%) removed.

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

2020 GMC Sierra 2500 HDs For Sale Nearby

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  • GMC AT4

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Jun 2022 • 25 Fuel-ups

    Property of furlofoder

  • 13.8 Avg MPG
  • L5P

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

    Property of jwmontoya

  • 14.4 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 6 Speed
    Added May 2020 • 68 Fuel-ups

    Property of uncledot

  • 13.3 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
  • 2020 AT4 2500HD

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Apr 2022 • 21 Fuel-ups

    Property of rab986

  • 16.8 Avg MPG
  • Sierra 2500HD Duramax

    2020 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Aug 2020 • 61 Fuel-ups

    Property of RamMan88

  • 16.0 Avg MPG
  • Denali 2500HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
    Added Nov 2020 • 29 Fuel-ups

    Property of eastcoasthd

  • 14.2 Avg MPG
  • No Greater Love

    2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
    Added Nov 2021 • 4 Fuel-ups

    Property of mattjames11

  • 8.0 Avg MPG
  • FURY

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

    Property of Thumpy

  • 14.3 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
    Added May 2022 • 51 Fuel-ups

    Property of jblythe

  • 12.9 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
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 GAS Automatic 6 Speed
    Added Aug 2020 • 8 Fuel-ups

    Property of shreff86

  • 11.6 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Feb 2021 • 3 Fuel-ups

    Property of NickCrow

  • 13.6 Avg MPG
  • My Sierra 2500 HD

    2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
    Added Oct 2020 • 25 Fuel-ups

    Property of powell1983

  • 16.7 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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Recent Activity

from other GMC Sierra 2500 HD vehicles (View All)

Tips

Consistent Refueling..don't top off your tank

Of course, to get good readings it is good to be consistent ... ...

by mtux96

Read more tips