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2015 GMC Sierra 3500 HD MPG

Based on data from 47 vehicles, 3,974 fuel-ups and 1,437,843 miles of driving, the 2015 GMC Sierra 3500 HD gets a combined Avg MPG of 13.56 with a 0.13 MPG margin of error.

Below you can see a distribution of the fuel-ups with 64 outliers (1.58%) removed.

Following shows the average MPG of each of the 47 vehicles in the system.

2015 GMC Sierra 3500 HDs For Sale Nearby

  • GMC Sierra 3500 HD

    2015 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Jun 2022 • 81 Fuel-ups

    Property of nascardreamin

  • 13.1 Avg MPG
  • GMC Sierra 3500 HD

    2015 GMC Sierra 3500 HD SLT 6.0L V8 FLEX Automatic 6 Speed
    Added Dec 2018 • 100 Fuel-ups

    Property of CAPaul

  • 12.4 Avg MPG
  • Denali

    2015 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Nov 2024 • 15 Fuel-ups

    Property of Shades420

  • 13.7 Avg MPG
  • 2015 GMC Sierra 3500 HD Denali

    2015 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Apr 2018 • 169 Fuel-ups

    Property of tbelllis1963

  • 15.4 Avg MPG
  • Denali

    2015 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Oct 2022 • 59 Fuel-ups

    Property of dek781

  • 16.1 Avg MPG
  • Sierra 3500 HD

    2015 GMC Sierra 3500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Mar 2018 • 183 Fuel-ups

    Property of Crash

  • 14.3 Avg MPG
  • Denali

    2015 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Aug 2023 • 612 Fuel-ups

    Property of Brucelas

  • 10.9 Avg MPG
  • My Sierra 3500 HD

    2015 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
    Added Dec 2021 • 43 Fuel-ups

    Property of RJenkins

  • 15.6 Avg MPG
  • Nali

    2015 GMC Sierra 3500 HD Denali 6.0L V8 CNG Automatic 6 Speed
    Added Jul 2023 • 48 Fuel-ups

    Property of Sober-Tony

  • 12.0 Avg MPG
  • R2D2

    2015 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added May 2021 • 74 Fuel-ups

    Property of Klass7

  • 12.5 Avg MPG
  • Big Spud

    2015 GMC Sierra 3500 HD 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Feb 2024 • 9 Fuel-ups

    Property of tiffanykorn

  • 15.9 Avg MPG
  • 2015 3500 Sierra

    2015 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
    Added May 2019 • 111 Fuel-ups

    Property of NJFF41

  • 14.5 Avg MPG
  • 2015 GMC 3500HD

    2015 GMC Sierra 3500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
    Added Aug 2023 • 37 Fuel-ups

    Property of kenaxcix

  • 12.9 Avg MPG
  • Sierra 3500 HD

    2015 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Mar 2023 • 64 Fuel-ups

    Property of Tx_Rebel

  • 12.7 Avg MPG
  • My Sierra 3500 HD

    2015 GMC Sierra 3500 HD 6.0L V8 GAS Automatic 6 Speed
    Added Sep 2019 • 100 Fuel-ups

    Property of jjj4x4

  • 9.2 Avg MPG
  • My Sierra 3500 HD

    2015 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Mar 2023 • 15 Fuel-ups

    Property of 1500HD

  • 14.0 Avg MPG
  • GMC Hd

    2015 GMC Sierra 3500 HD 6.6L V8 DIESEL Automatic 6 Speed Cab & Chassis - Crew Cab
    Added Oct 2018 • 416 Fuel-ups

    Property of dflores81

  • 13.7 Avg MPG
  • Little Red Wagon

    2015 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
    Added Feb 2018 • 321 Fuel-ups

    Property of ANK01

  • 15.1 Avg MPG
  • Sierra 3500HD

    2015 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
    Added Apr 2021 • 113 Fuel-ups

    Property of abonini

  • 15.0 Avg MPG
  • My Sierra 3500 HD

    2015 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
    Added Dec 2021 • 40 Fuel-ups

    Property of crashper

  • 14.9 Avg MPG

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