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2015 GMC Sierra 2500 HD MPG

Based on data from 115 vehicles, 10,264 fuel-ups and 3,350,406 miles of driving, the 2015 GMC Sierra 2500 HD gets a combined Avg MPG of 13.13 with a 0.07 MPG margin of error.

Below you can see a distribution of the fuel-ups with 140 outliers (1.35%) removed.

Following shows the average MPG of each of the 115 vehicles in the system.

2015 GMC Sierra 2500 HDs For Sale Nearby

  • Duke

    2015 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Jun 2019 • 273 Fuel-ups

    Property of timsterd

  • 12.1 Avg MPG
  • My Sierra 2500 HD

    2015 GMC Sierra 2500 HD SLE 6.0L V8 FLEX Automatic 6 Speed
    Added Oct 2017 • 141 Fuel-ups

    Property of Funnyguy1045

  • 10.2 Avg MPG
  • My Sierra 2500 HD

    2015 GMC Sierra 2500 HD SLT 6.0L V8 FLEX Automatic 6 Speed
    Added Apr 2023 • 8 Fuel-ups

    Property of yesubyllib

  • 7.3 Avg MPG
  • 2015 Sierra 2500 HD

    2015 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Jan 2023 • 231 Fuel-ups

    Property of OrangeMonza

  • 14.5 Avg MPG
  • 2015 Truck

    2015 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Jul 2018 • 182 Fuel-ups

    Property of Wallnut61

  • 13.9 Avg MPG
  • My Sierra 2500 HD

    2015 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Jul 2016 • 113 Fuel-ups

    Property of clnracing

  • 14.9 Avg MPG
  • Denali (22)

    2015 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Jan 2021 • 70 Fuel-ups

    Property of kingtek

  • 13.2 Avg MPG
  • Sierra 2500 HD

    2015 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
    Added Aug 2019 • 91 Fuel-ups

    Property of Bluewaterworth

  • 12.9 Avg MPG
  • My Sierra 2500 HD

    2015 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added May 2021 • 48 Fuel-ups

    Property of Dodge1167

  • 16.0 Avg MPG
  • La Bete

    2015 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed Extended Cab Pickup
    Added Sep 2021 • 3 Fuel-ups

    Property of Boo2u2

  • 18.4 Avg MPG
  • 2015 GMC

    2015 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Sep 2018 • 188 Fuel-ups

    Property of Dentil

  • 13.0 Avg MPG
  • My Sierra 2500 HD

    2015 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
    Added May 2020 • 72 Fuel-ups

    Property of CaddoCreek

  • 16.3 Avg MPG
  • Brienne

    2015 GMC Sierra 2500 HD SLE 6.0L V8 FLEX Automatic 6 Speed Extended Cab Pickup
    Added Sep 2019 • 54 Fuel-ups

    Property of Nitsua98

  • 11.3 Avg MPG
  • My Sierra 2500 HD

    2015 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Jul 2020 • 35 Fuel-ups

    Property of Mlperry

  • 12.9 Avg MPG
  • My Sierra 2500 HD

    2015 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Jul 2019 • 5 Fuel-ups

    Property of robby9074

  • 18.9 Avg MPG
  • Sierra Denali

    2015 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Jan 2018 • 160 Fuel-ups

    Property of rivcoinc

  • 13.4 Avg MPG
  • Denali HD

    2015 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Apr 2015 • 149 Fuel-ups

    Property of CHR3

  • 14.8 Avg MPG
  • Denali HD

    2015 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Feb 2017 • 190 Fuel-ups

    Property of DenaliDad

  • 13.7 Avg MPG
  • My Sierra 2500 HD

    2015 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Sep 2020 • 5 Fuel-ups

    Property of ThatguyRoy

  • 11.8 Avg MPG
  • GMC

    2015 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Nov 2017 • 127 Fuel-ups

    Property of smtyler

  • 13.4 Avg MPG

Recent Activity

from other GMC Sierra 2500 HD vehicles (View All)

Tips

Keep that diesel fuel tank full

Diesel fuel is highly hygroscopic. That means it sucks moist... ...

by Magalicious

Read more tips