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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• Sierra 1500 (Black Betty)

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

  Property of Skully54

• 28.6 Avg MPG

• My Sierra 1500

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

  Property of Crookie

• 26.4 Avg MPG

• Da Sierra 1500

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

  Property of tadder52

• 22.4 Avg MPG

• AT4 Carbon Pro

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Mar 2024 • 39 Fuel-ups

  Property of Rizzo5586

• 27.6 Avg MPG

• My Sierra 1500 AT4

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Jun 2024 • 28 Fuel-ups

  Property of Highfreak

• 20.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Apr 2024 • 25 Fuel-ups

  Property of m_inkley

• 16.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4X
  Added Apr 2023 • 94 Fuel-ups

  Property of bksatx

• 14.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 57 Fuel-ups

  Property of coachaugie

• 20.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 173 Fuel-ups

  Property of artmax480

• 19.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 54 Fuel-ups

  Property of Harvey8125

• 24.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2024 • 47 Fuel-ups

  Property of JFerenczi

• 27.7 Avg MPG

• 2023 GMC 1500 AT4

  2023 GMC Sierra 1500 AT4
  Added Jan 2023 • 114 Fuel-ups

  Property of OrangeMonza

• 20.6 Avg MPG

• Toothless

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 33 Fuel-ups

  Property of ChrisHager

• 13.8 Avg MPG

• Squeegee Slinging Mobile

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2024 • 24 Fuel-ups

  Property of mmstone24

• 16.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 31 Fuel-ups

  Property of RickRichard

• 26.7 Avg MPG

• Titanium Rush

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 38 Fuel-ups

  Property of wmwest74

• 25.8 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation
  Added Apr 2023 • 111 Fuel-ups

  Property of GussyP

• 19.7 Avg MPG

• AT4

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jan 2024 • 57 Fuel-ups

  Property of Schilling

• 23.2 Avg MPG

• My Sierra 1500

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

  Property of DuramaxLZO

• 22.1 Avg MPG

• Silver Sierra

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 46 Fuel-ups

  Property of rauschm

• 27.7 Avg MPG

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