2014 GMC Sierra 3500 HD MPG

Based on data from 9 vehicles, 604 fuel-ups and 229,954 miles of driving, the 2014 GMC Sierra 3500 HD gets a combined Avg MPG of 11.54 with a 0.29 MPG margin of error.

Below you can see a distribution of the fuel-ups with 8 outliers (1.31%) removed.

Following shows the average MPG of each of the 9 vehicles in the system.

• duramax

  2014 GMC Sierra 3500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Oct 2019 • 96 Fuel-ups

  Property of sportsluvr4lfe

• 14.5 Avg MPG

• Jimmy

  2014 GMC Sierra 3500 HD WT 6.6L V8 DIESEL Automatic 6 Speed Cab & Chassis - Crew Cab
  Added Oct 2022 • 166 Fuel-ups

  Property of haineroid

• 11.0 Avg MPG

• Jimmy DEF

  2014 GMC Sierra 3500 HD WT 6.6L V8 DIESEL Automatic 6 Speed Cab & Chassis - Crew Cab
  Added Apr 2023 • 7 Fuel-ups

  Property of haineroid

• 697.9 Avg MPG

• 2014 Denali

  2014 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Oct 2017 • 304 Fuel-ups

  Property of MYOR91ZV

• 11.2 Avg MPG

• Mighty Max

  2014 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Mar 2017 • 59 Fuel-ups

  Property of Roughrider13

• 15.2 Avg MPG

• Work Truck

  2014 GMC Sierra 3500 HD WT 6.6L V8 DIESEL Automatic 6 Speed
  Added Aug 2019 • 3 Fuel-ups

  Property of dewdn2

• 9.0 Avg MPG

• my red truck

  2014 GMC Sierra 3500 HD SLT Automatic 6 Speed Crew Cab Pickup
  Added Oct 2016 • 4 Fuel-ups

  Property of Smachine

• 22.3 Avg MPG

• My Sierra 3500 HD

  2014 GMC Sierra 3500 HD WT 6.6L DIESEL V8 Automatic 6
  Added Jun 2014 • 8 Fuel-ups

  Property of Lyn7530

• 12.7 Avg MPG

• HD3500

  2014 GMC Sierra 3500 HD DIESEL
  Added Jan 2014 • 3 Fuel-ups

  Property of JDAW

• 14.4 Avg MPG