Based on data from 130 vehicles, 5,356 fuel-ups and 2,069,358 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.24 with a 0.16 MPG margin of error.

Any Engine Type 2.7L L4 GAS (5) 3.0L L6 DIESEL (77) 5.3L V8 GAS (13) 6.2L V8 GAS (18) Any Body Style Extended Cab Pickup (1) Crew Cab Pickup (29) Any Submodel SLE (1) Pro (1) AT4X (6) Denali Ultimate (8) SLT (19) Elevation (19) Denali (26) AT4 (50)

Below you can see a distribution of the fuel-ups with 49 outliers (0.91%) removed.

Following shows the average MPG of each of the 130 vehicles in the system.

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• Jonathon’s GMC

  2023 GMC Sierra 1500 Elevation
  Added Jan 2023 • 105 Fuel-ups

  Property of luc_sko

• 26.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation
  Added Apr 2023 • 112 Fuel-ups

  Property of GussyP

• 19.7 Avg MPG

• Silver Sierra

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 48 Fuel-ups

  Property of rauschm

• 27.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Jul 2024 • 15 Fuel-ups

  Property of TheEndOfZWorld

• 12.8 Avg MPG

• My Sierra 1500

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

  Property of CJ804

• 24.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
  Added Jun 2024 • 15 Fuel-ups

  Property of KevsEcodiesel

• 16.3 Avg MPG

• Walt’s Truck

  2023 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed
  Added Oct 2023 • 57 Fuel-ups

  Property of wcgoggin

• 17.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed
  Added May 2023 • 51 Fuel-ups

  Property of farmer4ia

• 20.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 67 Fuel-ups

  Property of myat4

• 21.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 42 Fuel-ups

  Property of Fubar247

• 22.8 Avg MPG

• Squeegee Slinging Mobile

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2024 • 28 Fuel-ups

  Property of mmstone24

• 16.7 Avg MPG

• 2023 Sierra 1500

  2023 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
  Added Aug 2023 • 86 Fuel-ups

  Property of wolfedyl

• 22.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4X
  Added Apr 2023 • 96 Fuel-ups

  Property of bksatx

• 14.1 Avg MPG

• Ben's Sexy Beast

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jan 2024 • 31 Fuel-ups

  Property of Beng7782

• 25.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 51 Fuel-ups

  Property of jcrodgers17

• 24.4 Avg MPG

• JJ’s Jimmy 1500

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed
  Added Aug 2023 • 41 Fuel-ups

  Property of TKPjwlr

• 13.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2024 • 38 Fuel-ups

  Property of petereic

• 23.8 Avg MPG

• My Sierra

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2023 • 46 Fuel-ups

  Property of Armro

• 26.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed
  Added Jan 2024 • 29 Fuel-ups

  Property of scoutmaster

• 25.4 Avg MPG

• AT4X

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Feb 2023 • 123 Fuel-ups

  Property of ralph_tony

• 14.5 Avg MPG

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