Based on data from 116 vehicles, 3,260 fuel-ups and 1,240,026 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.07 with a 0.21 MPG margin of error.

Any Engine Type 2.7L L4 GAS (4) 3.0L L6 DIESEL (68) 5.3L V8 GAS (13) 6.2L V8 GAS (14) Any Body Style Extended Cab Pickup (1) Crew Cab Pickup (26) Any Submodel SLE (1) AT4X (4) Denali Ultimate (8) SLT (18) Elevation (20) Denali (21) AT4 (44)

Below you can see a distribution of the fuel-ups with 30 outliers (0.91%) removed.

Following shows the average MPG of each of the 116 vehicles in the system.

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• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 30 Fuel-ups

  Property of colesims

• 25.4 Avg MPG

• Silver Sierra

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 30 Fuel-ups

  Property of rauschm

• 28.1 Avg MPG

• 2023 AT4

  2023 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 69 Fuel-ups

  Property of ionsense

• 20.8 Avg MPG

• ‘23 GMC Sierra Denali - Ruby

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 11 Fuel-ups

  Property of Sparking1

• 25.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed
  Added Jan 2024 • 15 Fuel-ups

  Property of scoutmaster

• 22.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 33 Fuel-ups

  Property of Harvey8125

• 24.0 Avg MPG

• Presious 2.0

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2023 • 38 Fuel-ups

  Property of njaybong

• 23.7 Avg MPG

• 2023 GMC 1500 AT4

  2023 GMC Sierra 1500 AT4
  Added Jan 2023 • 80 Fuel-ups

  Property of OrangeMonza

• 20.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 58 Fuel-ups

  Property of Dkelley03

• 21.8 Avg MPG

• GMC Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Apr 2024 • 3 Fuel-ups

  Property of BrianSelby

• 25.6 Avg MPG

• 2023 GMC AT4

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Jun 2023 • 21 Fuel-ups

  Property of RamIdaho

• 25.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2024 • 11 Fuel-ups

  Property of petereic

• 23.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 51 Fuel-ups

  Property of jritt74

• 25.8 Avg MPG

• Sierra 1500 AT4

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 35 Fuel-ups

  Property of bmudd89

• 22.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2024 • 11 Fuel-ups

  Property of JFerenczi

• 28.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Feb 2023 • 129 Fuel-ups

  Property of alm3287

• 26.6 Avg MPG

• Denali

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 24 Fuel-ups

  Property of mysticpeanut

• 17.4 Avg MPG

• Denali

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Nov 2023 • 17 Fuel-ups

  Property of joemwade

• 15.7 Avg MPG

• Jonathon’s GMC

  2023 GMC Sierra 1500 Elevation
  Added Jan 2023 • 74 Fuel-ups

  Property of luc_sko

• 26.9 Avg MPG

• Sierra 1500 Elevation Duramax

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 23 Fuel-ups

  Property of RenaissanceMan65

• 24.4 Avg MPG

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