Based on data from 128 vehicles, 5,192 fuel-ups and 2,001,127 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.22 with a 0.17 MPG margin of error.

Any Engine Type 2.7L L4 GAS (5) 3.0L L6 DIESEL (76) 5.3L V8 GAS (13) 6.2L V8 GAS (17) Any Body Style Extended Cab Pickup (1) Crew Cab Pickup (29) Any Submodel SLE (1) Pro (1) AT4X (5) Denali Ultimate (8) SLT (19) Elevation (19) Denali (26) AT4 (49)

Below you can see a distribution of the fuel-ups with 49 outliers (0.93%) removed.

Following shows the average MPG of each of the 128 vehicles in the system.

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• 2023 AT4

  2023 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 85 Fuel-ups

  Property of ionsense

• 20.8 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 55 Fuel-ups

  Property of TXWJ

• 1.1 Avg MPG

• GMC Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Apr 2024 • 20 Fuel-ups

  Property of BrianSelby

• 27.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2024 • 36 Fuel-ups

  Property of calebepperson

• 22.9 Avg MPG

• Steve's Pick Up

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed Extended Cab Pickup
  Added Sep 2023 • 22 Fuel-ups

  Property of stevez494

• 28.5 Avg MPG

• Dalton Sierra 1500

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
  Added Aug 2023 • 84 Fuel-ups

  Property of deewhite

• 19.5 Avg MPG

• Red

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 8 Fuel-ups

  Property of l8TMike

• 23.6 Avg MPG

• 2023 GMC Sierra Elevation 5.3L

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed
  Added Oct 2023 • 42 Fuel-ups

  Property of MontanaSR5

• 18.6 Avg MPG

• 1500 Denali Ultimate

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2023 • 27 Fuel-ups

  Property of billiards101

• 24.9 Avg MPG

• Sierra

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Apr 2024 • 3 Fuel-ups

  Property of FatRusty

• 28.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
  Added Mar 2024 • 9 Fuel-ups

  Property of 01rc51

• 15.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2023 • 27 Fuel-ups

  Property of pascalspeed

• 20.2 Avg MPG

• Summer

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jun 2023 • 32 Fuel-ups

  Property of LiquidOceot

• 22.2 Avg MPG

• B&S Truck 335

  2023 GMC Sierra 1500 SLE 2.7L L4 GAS Automatic 10 Speed
  Added Sep 2023 • 62 Fuel-ups

  Property of rcrayj

• 18.6 Avg MPG

• 23AT4

  2023 GMC Sierra 1500 AT4 Automatic 10 Speed Crew Cab Pickup
  Added Nov 2023 • 13 Fuel-ups

  Property of TiffaniennJoe

• 24.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 15 Fuel-ups

  Property of ShaKiraLee

• 22.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Dec 2023 • 6 Fuel-ups

  Property of pitty27

• 25.8 Avg MPG

• 2023 GMC Denali

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 20 Fuel-ups

  Property of RyanLecuyer

• 21.5 Avg MPG

• My Sierra 1500

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

  Property of btango05

• 25.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Dec 2023 • 3 Fuel-ups

  Property of cruse

• 18.9 Avg MPG

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