Based on data from 141 vehicles, 6,307 fuel-ups and 2,413,690 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.10 with a 0.15 MPG margin of error.

Any Engine Type 2.7L L4 GAS (5) 3.0L L6 DIESEL (83) 5.3L V8 GAS (17) 6.2L V8 GAS (20) Any Body Style Extended Cab Pickup (1) Crew Cab Pickup (34) Any Submodel Pro (1) SLE (2) AT4X (7) Denali Ultimate (8) SLT (19) Elevation (21) Denali (30) AT4 (53)

Below you can see a distribution of the fuel-ups with 64 outliers (1.00%) removed.

Following shows the average MPG of each of the 141 vehicles in the system.

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• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Mar 2024 • 36 Fuel-ups

  Property of HuskerDustoff

• 23.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 6.2L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 218 Fuel-ups

  Property of tlrskunk

• 16.4 Avg MPG

• My Sierra 1500

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

  Property of ryanbaroni

• 23.2 Avg MPG

• Duramax 3.0

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Sep 2023 • 51 Fuel-ups

  Property of Beener909

• 25.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 204 Fuel-ups

  Property of artmax480

• 19.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Apr 2024 • 38 Fuel-ups

  Property of m_inkley

• 16.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4X
  Added Apr 2023 • 109 Fuel-ups

  Property of bksatx

• 14.2 Avg MPG

• AT4

  2023 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
  Added Aug 2023 • 108 Fuel-ups

  Property of Sicario8690

• 15.5 Avg MPG

• Denali

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Nov 2023 • 36 Fuel-ups

  Property of joemwade

• 16.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation
  Added Apr 2023 • 132 Fuel-ups

  Property of GussyP

• 19.7 Avg MPG

• 2023 Sierra Denali

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Dec 2022 • 47 Fuel-ups

  Property of leloup6989

• 25.3 Avg MPG

• My Sierra 1500 Again

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

  Property of shiftracer247

• 26.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Jun 2023 • 56 Fuel-ups

  Property of mskalak

• 24.0 Avg MPG

• 2023 Sierra 1500

  2023 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
  Added Aug 2023 • 98 Fuel-ups

  Property of wolfedyl

• 22.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2024 • 92 Fuel-ups

  Property of codymast

• 25.5 Avg MPG

• 2023 GMC Sierra 1500 AT4

  2023 GMC Sierra 1500 AT4
  Added Dec 2022 • 78 Fuel-ups

  Property of ndorval

• 22.0 Avg MPG

• AT4 MiniMax

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Feb 2023 • 190 Fuel-ups

  Property of alm3287

• 26.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 70 Fuel-ups

  Property of tdclapp88

• 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 • 78 Fuel-ups

  Property of ottozone

• 25.1 Avg MPG

• Walter

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Mar 2024 • 37 Fuel-ups

  Property of dynmite

• 20.4 Avg MPG

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