2021 GMC Sierra 1500 MPG

Based on data from 249 vehicles, 17,722 fuel-ups and 6,760,235 miles of driving, the 2021 GMC Sierra 1500 gets a combined Avg MPG of 20.33 with a 0.09 MPG margin of error.

Below you can see a distribution of the fuel-ups with 92 outliers (0.52%) removed.

Following shows the average MPG of each of the 249 vehicles in the system.

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• My Sierra 1500

  2021 GMC Sierra 1500 AT4 5.3L V8 GAS Automatic 10 Speed
  Added Jun 2021 • 24 Fuel-ups

  Property of Reaper_

• 15.7 Avg MPG

• AT4 Duramax

  2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Nov 2020 • 10 Fuel-ups

  Property of JDE

• 24.2 Avg MPG

• SLT Babymax

  2021 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Mar 2021 • 11 Fuel-ups

  Property of Fordt

• 23.4 Avg MPG

• YanivsAT4

  2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Mar 2021 • 12 Fuel-ups

  Property of YanivsAT4

• 21.8 Avg MPG

• My Sierra 1500

  2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Dec 2020 • 9 Fuel-ups

  Property of halflife1820

• 21.5 Avg MPG

• 21 Sierra 1500

  2021 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Nov 2020 • 8 Fuel-ups

  Property of meema4780

• 20.8 Avg MPG

• GMC

  2021 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Cab & Chassis - Crew Cab
  Added Jan 2021 • 3 Fuel-ups

  Property of MrGold

• 27.2 Avg MPG

• My Sierra 1500

  2021 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Feb 2021 • 4 Fuel-ups

  Property of Jrschrum

• 32.0 Avg MPG

• Hank

  2021 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 8 Speed Crew Cab Pickup
  Added Nov 2020 • 3 Fuel-ups

  Property of knowah

• 16.9 Avg MPG

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