Based on data from 114 vehicles, 3,122 fuel-ups and 1,185,939 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.05 with a 0.21 MPG margin of error.

Any Engine Type 2.7L L4 GAS (4) 3.0L L6 DIESEL (67) 5.3L V8 GAS (13) 6.2L V8 GAS (13) Any Body Style Extended Cab Pickup (1) Crew Cab Pickup (25) Any Submodel SLE (1) AT4X (3) Denali Ultimate (8) SLT (18) Elevation (20) Denali (21) AT4 (43)

Below you can see a distribution of the fuel-ups with 31 outliers (0.98%) removed.

Following shows the average MPG of each of the 114 vehicles in the system.

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• Sierra 1500 AT4

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

  Property of bmudd89

• 22.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 6.2L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 102 Fuel-ups

  Property of tlrskunk

• 16.8 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 38 Fuel-ups

  Property of jcrodgers17

• 23.7 Avg MPG

• GMC Sierra 1500

  2023 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
  Added Nov 2023 • 13 Fuel-ups

  Property of cshirley

• 17.8 Avg MPG

• AT4

  2023 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
  Added Aug 2023 • 68 Fuel-ups

  Property of Sicario8690

• 15.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 40 Fuel-ups

  Property of TXWJ

• 24.6 Avg MPG

• 2023 Sierra 1500

  2023 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
  Added Aug 2023 • 58 Fuel-ups

  Property of wolfedyl

• 21.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 24 Fuel-ups

  Property of Fubar247

• 22.6 Avg MPG

• My Sierra 1500

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

  Property of Froebe

• 24.3 Avg MPG

• AT4

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jan 2024 • 29 Fuel-ups

  Property of Schilling

• 22.2 Avg MPG

• Da Sierra 1500

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

  Property of tadder52

• 21.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 8 Speed
  Added Jun 2023 • 27 Fuel-ups

  Property of gmuick

• 14.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Jun 2023 • 25 Fuel-ups

  Property of mskalak

• 23.4 Avg MPG

• My Sierra 1500

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

  Property of scoutmaster

• 23.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 10 Speed
  Added Oct 2023 • 13 Fuel-ups

  Property of mstagner

• 14.9 Avg MPG

• My GMC 1500 AT4 Diesel

  2023 GMC Sierra 1500 AT4
  Added Dec 2022 • 77 Fuel-ups

  Property of Lawdog800

• 22.7 Avg MPG

• 2023 Sierra

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

  Property of ottozone

• 25.3 Avg MPG

• AT4 Carbon Pro

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

  Property of Rizzo5586

• 27.1 Avg MPG

• Silver Sierra

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 28 Fuel-ups

  Property of rauschm

• 28.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Mar 2024 • 4 Fuel-ups

  Property of HuskerDustoff

• 23.3 Avg MPG

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