2018 GMC Sierra 3500 HD MPG

Based on data from 27 vehicles, 2,023 fuel-ups and 649,256 miles of driving, the 2018 GMC Sierra 3500 HD gets a combined Avg MPG of 12.02 with a 0.18 MPG margin of error.

Below you can see a distribution of the fuel-ups with 9 outliers (0.44%) removed.

Following shows the average MPG of each of the 27 vehicles in the system.

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• 2018 Max

  2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2017 • 93 Fuel-ups

  Property of broit

• 12.7 Avg MPG

• My Sierra 3500 HD

  2018 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Mar 2019 • 4 Fuel-ups

  Property of mps446

• 14.3 Avg MPG

• My Sierra 3500 HD

  2018 GMC Sierra 3500 HD Denali 6.0L V8 FLEX Automatic 6 Speed
  Added Apr 2018 • 14 Fuel-ups

  Property of dogspike

• 14.2 Avg MPG

• My Sierra 3500 HD

  2018 GMC Sierra 3500 HD 6.6L V8 DIESEL Automatic 6 Speed
  Added Apr 2020 • 6 Fuel-ups

  Property of dboyznme

• 14.8 Avg MPG

• My Sierra 3500 HD

  2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Nov 2017 • 31 Fuel-ups

  Property of mcumbie

• 10.9 Avg MPG

• 2018 Sierra Denali HD

  2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Apr 2018 • 5 Fuel-ups

  Property of TrevorR_EcoDiesel

• 11.2 Avg MPG

• My Sierra 3500 HD

  2018 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2017 • 3 Fuel-ups

  Property of spudman00

• 17.0 Avg MPG

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