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2018 GMC Sierra 2500 HD MPG

Based on data from 54 vehicles, 3,171 fuel-ups and 1,270,873 miles of driving, the 2018 GMC Sierra 2500 HD gets a combined Avg MPG of 14.98 with a 0.13 MPG margin of error.

Below you can see a distribution of the fuel-ups with 39 outliers (1.21%) removed.

Following shows the average MPG of each of the 54 vehicles in the system.

2018 GMC Sierra 2500 HDs For Sale Nearby

  • GMC Sierra 2500 HD

    2018 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Jul 2018 • 217 Fuel-ups

    Property of LouLee

  • 15.6 Avg MPG
  • Denali

    2018 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Dec 2017 • 182 Fuel-ups

    Property of jlawles2

  • 15.4 Avg MPG
  • 2018 Sierra Denali HD

    2018 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Jun 2018 • 165 Fuel-ups

    Property of xstaski

  • 15.1 Avg MPG
  • Sierra 2500 HD

    2018 GMC Sierra 2500 HD SLT 6.0L V8 FLEX Automatic 6 Speed
    Added May 2019 • 78 Fuel-ups

    Property of larboy

  • 11.8 Avg MPG
  • GMC

    2018 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Feb 2021 • 26 Fuel-ups

    Property of csundell

  • 13.7 Avg MPG
  • My Sierra 2500 HD

    2018 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Feb 2021 • 35 Fuel-ups

    Property of long003

  • 16.8 Avg MPG
  • GMC Sierra 2500 HD

    2018 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Feb 2021 • 17 Fuel-ups

    Property of Krixus

  • 12.4 Avg MPG
  • My Sierra 2500 HD

    2018 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
    Added Nov 2018 • 91 Fuel-ups

    Property of cfort

  • 14.3 Avg MPG
  • My Denali

    2018 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Mar 2020 • 55 Fuel-ups

    Property of kmh54

  • 15.7 Avg MPG
  • 2018 Duramax

    2018 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Extended Cab Pickup
    Added Nov 2017 • 64 Fuel-ups

    Property of Rocketrollinsx

  • 14.3 Avg MPG
  • 18 Sierra

    2018 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Jul 2018 • 169 Fuel-ups

    Property of texags06

  • 14.5 Avg MPG
  • Denali

    2018 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Nov 2017 • 194 Fuel-ups

    Property of superflymtber

  • 17.4 Avg MPG
  • Denali HD

    2018 GMC Sierra 2500 HD Denali 6.0L V8 FLEX Automatic 6 Speed
    Added Jun 2020 • 53 Fuel-ups

    Property of Sullivan907

  • 13.3 Avg MPG
  • Sierra Denali 2500 HD

    2018 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Mar 2019 • 79 Fuel-ups

    Property of west27

  • 13.9 Avg MPG
  • Ken’s

    2018 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
    Added Apr 2020 • 37 Fuel-ups

    Property of Cave0369

  • 16.4 Avg MPG
  • My Sierra 2500 HD

    2018 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
    Added Jun 2018 • 68 Fuel-ups

    Property of Boerklong

  • 15.9 Avg MPG
  • Denali 2500HD

    2018 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Jan 2018 • 69 Fuel-ups

    Property of Mavis500

  • 15.2 Avg MPG
  • My Sierra 2500 HD

    2018 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
    Added Apr 2019 • 128 Fuel-ups

    Property of 4gkids

  • 14.7 Avg MPG
  • Sierra 2500

    2018 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
    Added Nov 2018 • 197 Fuel-ups

    Property of IPAGuy

  • 12.3 Avg MPG
  • My Sierra 2500 HD

    2018 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added May 2018 • 175 Fuel-ups

    Property of jtw811

  • 14.5 Avg MPG

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