Based on data from 116 vehicles, 3,263 fuel-ups and 1,241,331 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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• 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

• Jeffrey Bishop

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Feb 2024 • 13 Fuel-ups

  Property of JBISHOP

• 25.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 45 Fuel-ups

  Property of myat4

• 21.3 Avg MPG

• Titanium Rush

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 20 Fuel-ups

  Property of wmwest74

• 25.4 Avg MPG

• Toothless

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 22 Fuel-ups

  Property of ChrisHager

• 13.8 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 41 Fuel-ups

  Property of TXWJ

• 24.5 Avg MPG

• My Sierra 1500 Again

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 19 Fuel-ups

  Property of shiftracer247

• 26.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Apr 2024 • 4 Fuel-ups

  Property of m_inkley

• 16.5 Avg MPG

• My Sierra 1500

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

  Property of Crookie

• 26.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 39 Fuel-ups

  Property of tdclapp88

• 22.5 Avg MPG

• Da Sierra 1500

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

  Property of tadder52

• 21.2 Avg MPG

• AT4

  2023 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
  Added Aug 2023 • 71 Fuel-ups

  Property of Sicario8690

• 15.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2024 • 50 Fuel-ups

  Property of codymast

• 25.8 Avg MPG

• AT4 Carbon Pro

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Mar 2024 • 12 Fuel-ups

  Property of Rizzo5586

• 27.1 Avg MPG

• Dalton Sierra 1500

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
  Added Aug 2023 • 66 Fuel-ups

  Property of deewhite

• 19.2 Avg MPG

• Lucille Ball

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

  Property of jsaunders216

• 22.9 Avg MPG

• Walt’s Truck

  2023 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed
  Added Oct 2023 • 28 Fuel-ups

  Property of wcgoggin

• 17.1 Avg MPG

• AT4X

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Feb 2023 • 82 Fuel-ups

  Property of ralph_tony

• 13.7 Avg MPG

• 2023 GMC Sierra 1500 AT4

  2023 GMC Sierra 1500 AT4
  Added Dec 2022 • 50 Fuel-ups

  Property of ndorval

• 22.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Jan 2024 • 14 Fuel-ups

  Property of Froebe

• 24.1 Avg MPG

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