2023 GMC Sierra 3500 HD MPG

Based on data from 10 vehicles, 369 fuel-ups and 120,817 miles of driving, the 2023 GMC Sierra 3500 HD gets a combined Avg MPG of 12.86 with a 0.42 MPG margin of error.

Below you can see a distribution of the fuel-ups with 0 outliers (0.00%) removed.

Following shows the average MPG of each of the 10 vehicles in the system.

• My Sierra 3500 HD

  2023 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2023 • 66 Fuel-ups

  Property of Roadrunner2019

• 13.8 Avg MPG

• Truck #36 LG

  2023 GMC Sierra 3500 HD Pro 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2024 • 29 Fuel-ups

  Property of gprp

• 11.9 Avg MPG

• Blue Steel

  2023 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Aug 2023 • 30 Fuel-ups

  Property of taintfair

• 15.3 Avg MPG

• My Sierra 3500 HD

  2023 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2024 • 14 Fuel-ups

  Property of HaulnNutz

• 15.3 Avg MPG

• My Sierra 3500 HD

  2023 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Jan 2024 • 36 Fuel-ups

  Property of turbotuner

• 14.9 Avg MPG

• GMC Sierra 3500 HD Denali Dually

  2023 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Jan 2023 • 49 Fuel-ups

  Property of 2023Dually

• 10.3 Avg MPG

• 2023 Sierra

  2023 GMC Sierra 3500 HD SLE 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Dec 2024 • 84 Fuel-ups

  Property of iamryanash

• 13.5 Avg MPG

• My Sierra 3500 HD

  2023 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Jan 2024 • 17 Fuel-ups

  Property of gmcphoto25

• 10.0 Avg MPG

• My Sierra 3500 HD

  2023 GMC Sierra 3500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added May 2023 • 58 Fuel-ups

  Property of ncbruen

• 11.0 Avg MPG

• My Sierra 3500 HD

  2023 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2023 • 19 Fuel-ups

  Property of joh02051

• 15.5 Avg MPG