Click here to see important news regarding the aCar App

2018 GMC Sierra 3500 HD MPG

Based on data from 27 vehicles, 2,095 fuel-ups and 678,778 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 • 46 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

gas it before the hill

give it a little more gas before going up hill if you press... ...

by rakapur

Read more tips