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2018 GMC Sierra 3500 HD MPG

Based on data from 27 vehicles, 2,096 fuel-ups and 679,344 miles of driving, the 2018 GMC Sierra 3500 HD gets a combined Avg MPG of 12.10 with a 0.17 MPG margin of error.

Below you can see a distribution of the fuel-ups with 9 outliers (0.43%) removed.

Following shows the average MPG of each of the 27 vehicles in the system.

2018 GMC Sierra 3500 HDs For Sale Nearby

  • GMC

    2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Aug 2023 • 47 Fuel-ups

    Property of hikyuuri

  • 14.3 Avg MPG
  • Big Elmo

    2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Jan 2018 • 156 Fuel-ups

    Property of Geodude

  • 10.8 Avg MPG
  • My Sierra 3500 HD

    2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Feb 2021 • 178 Fuel-ups

    Property of codycourtney2

  • 13.6 Avg MPG
  • GMC 3500

    2018 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
    Added Dec 2017 • 69 Fuel-ups

    Property of Peterbuilt75

  • 10.9 Avg MPG
  • Tow Pig

    2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Aug 2018 • 294 Fuel-ups

    Property of Robicus

  • 13.2 Avg MPG
  • Sierra 3500 HD

    2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Nov 2017 • 178 Fuel-ups

    Property of jamesnkerr

  • 14.0 Avg MPG
  • Great White L5P

    2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Sep 2018 • 86 Fuel-ups

    Property of 2manyliters

  • 13.9 Avg MPG
  • My Sierra 3500 HD

    2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Mar 2024 • 3 Fuel-ups

    Property of zachjohnson0726

  • 15.5 Avg MPG
  • 2018 GMC Sierra 3500HD

    2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Aug 2019 • 166 Fuel-ups

    Property of pputney

  • 11.8 Avg MPG
  • Denali

    2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Jun 2018 • 125 Fuel-ups

    Property of suasman

  • 14.1 Avg MPG
  • Sierra

    2018 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Nov 2021 • 323 Fuel-ups

    Property of artman1913

  • 11.5 Avg MPG
  • DEF

    2018 GMC Sierra 3500 HD SLT Automatic 6 Speed
    Added Nov 2021 • 31 Fuel-ups

    Property of artman1913

  • 525.2 Avg MPG
  • Pick Up

    2018 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Nov 2022 • 4 Fuel-ups

    Property of petestoy

  • 14.2 Avg MPG
  • GMC Sierra 3500 HD

    2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Sep 2017 • 90 Fuel-ups

    Property of amtrak8

  • 13.1 Avg MPG
  • My Sierra 3500 HD

    2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Jul 2020 • 127 Fuel-ups

    Property of tortuga99

  • 10.9 Avg MPG
  • Sierra 3500 HD RV Hauler

    2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Mar 2020 • 109 Fuel-ups

    Property of Derril

  • 11.9 Avg MPG
  • My Sierra 3500 HD

    2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Sep 2018 • 155 Fuel-ups

    Property of brizgislawrencej

  • 13.0 Avg MPG
  • CB Denali

    2018 GMC Sierra 3500 HD Denali 6.0L V8 FLEX Automatic 6 Speed
    Added Jul 2019 • 11 Fuel-ups

    Property of KTBHDH

  • 9.2 Avg MPG
  • My Sierra 3500 HD

    2018 GMC Sierra 3500 HD 6.6L V8 DIESEL Automatic 6 Speed
    Added Jul 2018 • 47 Fuel-ups

    Property of skinnertonoutlaw

  • 8.7 Avg MPG
  • Denali 3500 DWR

    2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Jul 2018 • 13 Fuel-ups

    Property of Ncrzrbk

  • 14.9 Avg MPG

Recent Activity

from other GMC Sierra 3500 HD vehicles (View All)

Tips

How fast should you drive for fuel economy?

The tips I've read so far fail to account for the vehicle's ... ...

by Runaway1956

Read more tips