2012 GMC Sierra 3500 HD MPG

Based on data from 16 vehicles, 1,707 fuel-ups and 596,423 miles of driving, the 2012 GMC Sierra 3500 HD gets a combined Avg MPG of 13.24 with a 0.18 MPG margin of error.

Below you can see a distribution of the fuel-ups with 67 outliers (3.78%) removed.

Following shows the average MPG of each of the 16 vehicles in the system.

• My Sierra 3500 HD

  2012 GMC Sierra 3500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added May 2023 • 25 Fuel-ups

  Property of DieselDerrick

• 10.9 Avg MPG

• 2012 Denali

  2012 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2016 • 392 Fuel-ups

  Property of graeck1

• 16.4 Avg MPG

• '12 GMC

  2012 GMC Sierra 3500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2016 • 528 Fuel-ups

  Property of martinweber

• 16.6 Avg MPG

• Jim

  2012 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Extended Cab Pickup
  Added Apr 2018 • 151 Fuel-ups

  Property of jimmiller17

• 11.9 Avg MPG

• MillBilly

  2012 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Apr 2018 • 41 Fuel-ups

  Property of CJayD

• 13.0 Avg MPG

• Ton truck

  2012 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Extended Cab Pickup
  Added Apr 2018 • 10 Fuel-ups

  Property of fsb_scoh

• 23.3 Avg MPG

• Z Denali

  2012 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Aug 2016 • 149 Fuel-ups

  Property of k78stuff

• 13.3 Avg MPG

• My Sierra 3500 HD

  2012 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Feb 2018 • 12 Fuel-ups

  Property of pcloss

• 14.0 Avg MPG

• My Sierra 3500 HD

  2012 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Oct 2016 • 45 Fuel-ups

  Property of Whato

• 17.3 Avg MPG

• Sierra

  2012 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jan 2017 • 6 Fuel-ups

  Property of sinnettc

• 13.4 Avg MPG

• GMC

  2012 GMC Sierra 3500 HD WT 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2016 • 98 Fuel-ups

  Property of seraphim

• 12.6 Avg MPG

• 2012 3500HD

  2012 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Sep 2013 • 320 Fuel-ups

  Property of drfife

• 10.7 Avg MPG

• My Sierra 3500 HD

  2012 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Nov 2015 • 7 Fuel-ups

  Property of Karonb

• 11.3 Avg MPG

• duelly

  2012 GMC Sierra 3500 HD DIESEL
  Added Mar 2012 • 17 Fuel-ups

  Property of Pamelav

• 14.5 Avg MPG

• GMC

  2012 GMC Sierra 3500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2016 • 184 Fuel-ups

  Property of martinweber

• 14.4 Avg MPG

• GMC Sierra

  2012 GMC Sierra 3500 HD DIESEL V8
  Added May 2012 • 14 Fuel-ups

  Property of copperpot126

• 11.1 Avg MPG