2021 GMC Sierra 2500 HD MPG

Based on data from 63 vehicles, 3,539 fuel-ups and 1,133,209 miles of driving, the 2021 GMC Sierra 2500 HD gets a combined Avg MPG of 13.15 with a 0.13 MPG margin of error.

Below you can see a distribution of the fuel-ups with 13 outliers (0.37%) removed.

Following shows the average MPG of each of the 63 vehicles in the system.

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• Terry’s Sierra 2500 HD

  2021 GMC Sierra 2500 HD SLT 6.6L V8 GAS Automatic 10 Speed
  Added Mar 2021 • 7 Fuel-ups

  Property of DragonKat

• 14.7 Avg MPG

• Blacky

  2021 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Feb 2021 • 4 Fuel-ups

  Property of OhioDuramaX

• 16.5 Avg MPG

• My Sierra 2500 HD

  2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Nov 2020 • 7 Fuel-ups

  Property of stanjod

• 13.9 Avg MPG

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