Based on data from 128 vehicles, 5,192 fuel-ups and 2,001,127 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.22 with a 0.17 MPG margin of error.

Any Engine Type 2.7L L4 GAS (5) 3.0L L6 DIESEL (76) 5.3L V8 GAS (13) 6.2L V8 GAS (17) Any Body Style Extended Cab Pickup (1) Crew Cab Pickup (29) Any Submodel SLE (1) Pro (1) AT4X (5) Denali Ultimate (8) SLT (19) Elevation (19) Denali (26) AT4 (49)

Below you can see a distribution of the fuel-ups with 49 outliers (0.93%) removed.

Following shows the average MPG of each of the 128 vehicles in the system.

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• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 6.2L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 172 Fuel-ups

  Property of tlrskunk

• 16.8 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Dec 2023 • 32 Fuel-ups

  Property of CJ804

• 24.6 Avg MPG

• AT4

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 44 Fuel-ups

  Property of jlkeiser70

• 24.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2024 • 16 Fuel-ups

  Property of Btucker6

• 21.8 Avg MPG

• My Sierra

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2023 • 45 Fuel-ups

  Property of Armro

• 26.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2024 • 12 Fuel-ups

  Property of Thickdickdaddy

• 19.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Jan 2024 • 30 Fuel-ups

  Property of Froebe

• 24.7 Avg MPG

• Duramax 3.0

  2023 GMC Sierra 1500 SLT Automatic 10 Speed Crew Cab Pickup
  Added Sep 2023 • 45 Fuel-ups

  Property of Beener909

• 25.4 Avg MPG

• 2023 GMC Sierra 1500 AT4

  2023 GMC Sierra 1500 AT4
  Added Dec 2022 • 68 Fuel-ups

  Property of ndorval

• 21.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 8 Speed
  Added Jun 2023 • 45 Fuel-ups

  Property of gmuick

• 15.3 Avg MPG

• 2023 Sierra 1500

  2023 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
  Added Aug 2023 • 84 Fuel-ups

  Property of wolfedyl

• 22.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 65 Fuel-ups

  Property of myat4

• 21.4 Avg MPG

• El Jefe

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 68 Fuel-ups

  Property of PharmD2010

• 14.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 63 Fuel-ups

  Property of colesims

• 25.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 50 Fuel-ups

  Property of jcrodgers17

• 24.4 Avg MPG

• My Sierra 1500 mini max

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 49 Fuel-ups

  Property of jimmyag

• 29.7 Avg MPG

• Denali

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 36 Fuel-ups

  Property of mysticpeanut

• 17.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 94 Fuel-ups

  Property of jritt74

• 26.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 58 Fuel-ups

  Property of tdclapp88

• 23.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Jun 2023 • 43 Fuel-ups

  Property of mskalak

• 24.2 Avg MPG

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