Based on data from 130 vehicles, 5,356 fuel-ups and 2,069,358 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.24 with a 0.16 MPG margin of error.

Any Engine Type 2.7L L4 GAS (5) 3.0L L6 DIESEL (77) 5.3L V8 GAS (13) 6.2L V8 GAS (18) Any Body Style Extended Cab Pickup (1) Crew Cab Pickup (29) Any Submodel SLE (1) Pro (1) AT4X (6) Denali Ultimate (8) SLT (19) Elevation (19) Denali (26) AT4 (50)

Below you can see a distribution of the fuel-ups with 49 outliers (0.91%) removed.

Following shows the average MPG of each of the 130 vehicles in the system.

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• Presious 2.0

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

  Property of njaybong

• 23.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 10 Speed
  Added Oct 2023 • 28 Fuel-ups

  Property of mstagner

• 14.9 Avg MPG

• Denali

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 37 Fuel-ups

  Property of mysticpeanut

• 17.4 Avg MPG

• Sierra

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 23 Fuel-ups

  Property of nomo

• 24.4 Avg MPG

• Sierra 1500 Elevation Duramax

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

  Property of RenaissanceMan65

• 23.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2024 • 17 Fuel-ups

  Property of Btucker6

• 21.8 Avg MPG

• myAT4

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added May 2023 • 59 Fuel-ups

  Property of corneliani

• 23.1 Avg MPG

• Jeffrey Bishop

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Feb 2024 • 24 Fuel-ups

  Property of JBISHOP

• 25.8 Avg MPG

• My GMC 1500 AT4 Diesel

  2023 GMC Sierra 1500 AT4
  Added Dec 2022 • 98 Fuel-ups

  Property of Lawdog800

• 22.8 Avg MPG

• AT4

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 45 Fuel-ups

  Property of jlkeiser70

• 24.5 Avg MPG

• GMC

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 52 Fuel-ups

  Property of dak4deals

• 23.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Jun 2024 • 22 Fuel-ups

  Property of Lanlo65

• 26.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Apr 2024 • 26 Fuel-ups

  Property of m_inkley

• 16.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 55 Fuel-ups

  Property of Harvey8125

• 24.5 Avg MPG

• truck

  2023 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Sep 2023 • 53 Fuel-ups

  Property of rob_gio

• 16.2 Avg MPG

• El Jefe

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 69 Fuel-ups

  Property of PharmD2010

• 14.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed
  Added Jul 2023 • 37 Fuel-ups

  Property of pbc84

• 18.7 Avg MPG

• Duramax 3.0

  2023 GMC Sierra 1500 SLT Automatic 10 Speed Crew Cab Pickup
  Added Sep 2023 • 46 Fuel-ups

  Property of Beener909

• 25.3 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

• 2023 GMC 1500 AT4

  2023 GMC Sierra 1500 AT4
  Added Jan 2023 • 115 Fuel-ups

  Property of OrangeMonza

• 20.6 Avg MPG

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