Based on data from 142 vehicles, 6,719 fuel-ups and 2,571,215 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.09 with a 0.15 MPG margin of error.

Any Engine Type 2.7L L4 GAS (5) 3.0L L6 DIESEL (84) 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 (54)

Below you can see a distribution of the fuel-ups with 65 outliers (0.96%) removed.

Following shows the average MPG of each of the 142 vehicles in the system.

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• My Sierra 1500

  2023 GMC Sierra 1500 Elevation
  Added Apr 2023 • 147 Fuel-ups

  Property of GussyP

• 19.7 Avg MPG

• My Sierra 1500 mini max

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 68 Fuel-ups

  Property of jimmyag

• 29.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2024 • 32 Fuel-ups

  Property of Thickdickdaddy

• 20.4 Avg MPG

• Titanium Rush

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 56 Fuel-ups

  Property of wmwest74

• 25.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2024 • 30 Fuel-ups

  Property of eswanson

• 25.0 Avg MPG

• My Sierra 1500

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

  Property of RickRichard

• 26.7 Avg MPG

• AT4X

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Feb 2023 • 134 Fuel-ups

  Property of ralph_tony

• 14.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 221 Fuel-ups

  Property of artmax480

• 19.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Mar 2024 • 41 Fuel-ups

  Property of HuskerDustoff

• 23.1 Avg MPG

• Sierra 1500 (Black Betty)

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

  Property of Skully54

• 28.5 Avg MPG

• AT4 MiniMax

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Feb 2023 • 198 Fuel-ups

  Property of alm3287

• 26.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4
  Added Feb 2023 • 87 Fuel-ups

  Property of tunit21

• 22.9 Avg MPG

• AT4x

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Dec 2024 • 42 Fuel-ups

  Property of sklineman

• 14.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 68 Fuel-ups

  Property of coachaugie

• 20.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2024 • 102 Fuel-ups

  Property of codymast

• 25.4 Avg MPG

• Squeegee Slinging Mobile

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2024 • 61 Fuel-ups

  Property of mmstone24

• 16.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 118 Fuel-ups

  Property of Dkelley03

• 22.4 Avg MPG

• GMC Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 70 Fuel-ups

  Property of Rigid883

• 21.0 Avg MPG

• Walt’s Truck

  2023 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed
  Added Oct 2023 • 76 Fuel-ups

  Property of wcgoggin

• 17.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2024 • 71 Fuel-ups

  Property of JFerenczi

• 27.0 Avg MPG

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