2023 GMC Sierra 3500 HD MPG

Based on data from 9 vehicles, 276 fuel-ups and 93,450 miles of driving, the 2023 GMC Sierra 3500 HD gets a combined Avg MPG of 12.70 with a 0.48 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 9 vehicles in the system.

• 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

• Truck #36 LG

  2023 GMC Sierra 3500 HD Pro 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2024 • 26 Fuel-ups

  Property of gprp

• 11.6 Avg MPG

• My Sierra 3500 HD

  2023 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2023 • 63 Fuel-ups

  Property of Roadrunner2019

• 13.8 Avg MPG

• My Sierra 3500 HD

  2023 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2024 • 11 Fuel-ups

  Property of HaulnNutz

• 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 • 48 Fuel-ups

  Property of 2023Dually

• 10.4 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 Jan 2024 • 33 Fuel-ups

  Property of turbotuner

• 15.0 Avg MPG

• Blue Steel

  2023 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Aug 2023 • 29 Fuel-ups

  Property of taintfair

• 15.1 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