Based on data from 136 vehicles, 5,683 fuel-ups and 2,189,885 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.20 with a 0.16 MPG margin of error.

Any Engine Type 2.7L L4 GAS (5) 3.0L L6 DIESEL (79) 5.3L V8 GAS (16) 6.2L V8 GAS (19) Any Body Style Extended Cab Pickup (1) Crew Cab Pickup (31) Any Submodel Pro (1) SLE (2) AT4X (7) Denali Ultimate (8) SLT (19) Elevation (21) Denali (28) AT4 (50)

Below you can see a distribution of the fuel-ups with 53 outliers (0.92%) removed.

Following shows the average MPG of each of the 136 vehicles in the system.

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• Titanium Rush

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 43 Fuel-ups

  Property of wmwest74

• 25.8 Avg MPG

• myAT4

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added May 2023 • 63 Fuel-ups

  Property of corneliani

• 23.2 Avg MPG

• Da Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 74 Fuel-ups

  Property of tadder52

• 21.9 Avg MPG

• AT4x

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Dec 2024 • 9 Fuel-ups

  Property of sklineman

• 13.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 184 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 Apr 2024 • 85 Fuel-ups

  Property of codymast

• 25.8 Avg MPG

• 2023 Sierra 1500

  2023 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
  Added Aug 2023 • 91 Fuel-ups

  Property of wolfedyl

• 22.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Nov 2024 • 27 Fuel-ups

  Property of TNRAMBox

• 14.9 Avg MPG

• Silver Sierra

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 51 Fuel-ups

  Property of rauschm

• 27.8 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 98 Fuel-ups

  Property of Dkelley03

• 22.5 Avg MPG

• Denali

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 40 Fuel-ups

  Property of mysticpeanut

• 17.4 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 Fubar247

• 22.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2024 • 55 Fuel-ups

  Property of JFerenczi

• 27.2 Avg MPG

• Ben's Sexy Beast

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jan 2024 • 33 Fuel-ups

  Property of Beng7782

• 26.0 Avg MPG

• Sierra 1500 Elevation Duramax

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 47 Fuel-ups

  Property of RenaissanceMan65

• 23.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4X
  Added Apr 2023 • 101 Fuel-ups

  Property of bksatx

• 14.2 Avg MPG

• Walter

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Mar 2024 • 34 Fuel-ups

  Property of dynmite

• 20.2 Avg MPG

• My Sierra 1500 mini max

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

  Property of jimmyag

• 29.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 58 Fuel-ups

  Property of Harvey8125

• 24.5 Avg MPG

• Squeegee Slinging Mobile

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2024 • 36 Fuel-ups

  Property of mmstone24

• 16.6 Avg MPG

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