Based on data from 136 vehicles, 5,647 fuel-ups and 2,175,804 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.20 with a 0.16 MPG margin of error.

Any Engine Type 2.7L L4 GAS (5) 3.0L L6 DIESEL (79) 5.3L V8 GAS (16) 6.2L V8 GAS (19) Any Body Style Extended Cab Pickup (1) Crew Cab Pickup (31) Any Submodel Pro (1) SLE (2) AT4X (7) Denali Ultimate (8) SLT (19) Elevation (21) Denali (28) AT4 (50)

Below you can see a distribution of the fuel-ups with 52 outliers (0.91%) removed.

Following shows the average MPG of each of the 136 vehicles in the system.

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• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Nov 2024 • 3 Fuel-ups

  Property of kmcnew

• 23.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 18 Fuel-ups

  Property of ryanbaroni

• 24.4 Avg MPG

• Trucky Mctruckface

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Dec 2024 • 8 Fuel-ups

  Property of Adamnoblick

• 24.2 Avg MPG

• Jimmy

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jun 2023 • 43 Fuel-ups

  Property of Ceteked

• 27.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
  Added May 2023 • 17 Fuel-ups

  Property of lvmailman

• 17.2 Avg MPG

• 2023 AT4 CarbonPro

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 29 Fuel-ups

  Property of CarbonPro

• 25.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 6.2L V8 GAS Automatic 10 Speed
  Added Jul 2023 • 13 Fuel-ups

  Property of tennesseesmith

• 17.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Feb 2023 • 176 Fuel-ups

  Property of alm3287

• 26.4 Avg MPG

• My AT4X

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Jun 2022 • 68 Fuel-ups

  Property of TreyK42

• 14.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 55 Fuel-ups

  Property of TXWJ

• 1.1 Avg MPG

• GMC Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Apr 2024 • 20 Fuel-ups

  Property of BrianSelby

• 27.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2024 • 36 Fuel-ups

  Property of calebepperson

• 22.9 Avg MPG

• Steve's Pick Up

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed Extended Cab Pickup
  Added Sep 2023 • 22 Fuel-ups

  Property of stevez494

• 28.5 Avg MPG

• Dalton Sierra 1500

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
  Added Aug 2023 • 84 Fuel-ups

  Property of deewhite

• 19.5 Avg MPG

• Red

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 8 Fuel-ups

  Property of l8TMike

• 23.6 Avg MPG

• 2023 GMC Sierra Elevation 5.3L

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed
  Added Oct 2023 • 42 Fuel-ups

  Property of MontanaSR5

• 18.6 Avg MPG

• 1500 Denali Ultimate

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2023 • 27 Fuel-ups

  Property of billiards101

• 24.9 Avg MPG

• Sierra

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Apr 2024 • 3 Fuel-ups

  Property of FatRusty

• 28.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
  Added Mar 2024 • 9 Fuel-ups

  Property of 01rc51

• 15.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2023 • 27 Fuel-ups

  Property of pascalspeed

• 20.2 Avg MPG

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