2023 GMC Sierra 2500 HD MPG

Based on data from 9 vehicles, 240 fuel-ups and 81,808 miles of driving, the 2023 GMC Sierra 2500 HD gets a combined Avg MPG of 15.42 with a 0.39 MPG margin of error.

Below you can see a distribution of the fuel-ups with 5 outliers (2.04%) removed.

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

• My Sierra 2500 HD

  2023 GMC Sierra 2500 HD Denali 6.6L V8 GAS Automatic 6 Speed
  Added May 2024 • 30 Fuel-ups

  Property of 4PSilva

• 13.9 Avg MPG

• Sierra Denali

  2023 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jan 2025 • 56 Fuel-ups

  Property of orderfromchaos

• 17.2 Avg MPG

• My Sierra 2500 HD

  2023 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 10 Speed
  Added May 2023 • 106 Fuel-ups

  Property of Gaderider

• 16.0 Avg MPG

• My Sierra 2500 HD

  2023 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2024 • 11 Fuel-ups

  Property of ggfuzzy

• 15.5 Avg MPG

• My Sierra 2500 HD

  2023 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Apr 2024 • 6 Fuel-ups

  Property of kcrluce

• 18.2 Avg MPG

• My Sierra 2500 HD

  2023 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2024 • 4 Fuel-ups

  Property of murphy3

• 13.0 Avg MPG

• New Work Truck

  2023 GMC Sierra 2500 HD SLT 6.6L V8 GAS Automatic 6 Speed
  Added Jun 2023 • 28 Fuel-ups

  Property of HoundzRig

• 12.2 Avg MPG

• My Sierra 2500 HD

  2023 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Mar 2024 • 19 Fuel-ups

  Property of briank461

• 15.3 Avg MPG

• My Sierra 2500 HD

  2023 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2023 • 7 Fuel-ups

  Property of apm4471

• 12.9 Avg MPG