Based on data from 132 vehicles, 5,415 fuel-ups and 2,091,254 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.23 with a 0.16 MPG margin of error.

Any Engine Type 2.7L L4 GAS (5) 3.0L L6 DIESEL (78) 5.3L V8 GAS (14) 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 (21) Denali (26) AT4 (50)

Below you can see a distribution of the fuel-ups with 49 outliers (0.90%) removed.

Following shows the average MPG of each of the 132 vehicles in the system.

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• Da Sierra 1500

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

  Property of tadder52

• 22.5 Avg MPG

• My Sierra 1500 mini max

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 53 Fuel-ups

  Property of jimmyag

• 29.7 Avg MPG

• El Jefe

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

  Property of PharmD2010

• 14.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Jan 2024 • 35 Fuel-ups

  Property of Froebe

• 24.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 6.2L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 182 Fuel-ups

  Property of tlrskunk

• 16.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2024 • 6 Fuel-ups

  Property of MaxTowing

• 23.7 Avg MPG

• My GMC DENALI

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Mar 2023 • 17 Fuel-ups

  Property of dmac1026

• 19.0 Avg MPG

• Sierra 1500 (Black Betty)

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 19 Fuel-ups

  Property of Skully54

• 28.7 Avg MPG

• Walt’s Truck

  2023 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed
  Added Oct 2023 • 58 Fuel-ups

  Property of wcgoggin

• 17.0 Avg MPG

• Squeegee Slinging Mobile

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2024 • 30 Fuel-ups

  Property of mmstone24

• 16.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2024 • 50 Fuel-ups

  Property of JFerenczi

• 27.4 Avg MPG

• 2023 GMC 1500 AT4

  2023 GMC Sierra 1500 AT4
  Added Jan 2023 • 116 Fuel-ups

  Property of OrangeMonza

• 20.6 Avg MPG

• AT4

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jan 2024 • 62 Fuel-ups

  Property of Schilling

• 23.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 99 Fuel-ups

  Property of jritt74

• 26.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2024 • 79 Fuel-ups

  Property of codymast

• 26.0 Avg MPG

• Willow

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 95 Fuel-ups

  Property of buddyc48

• 21.2 Avg MPG

• AT4

  2023 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
  Added Aug 2023 • 101 Fuel-ups

  Property of Sicario8690

• 15.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2024 • 14 Fuel-ups

  Property of Thickdickdaddy

• 19.3 Avg MPG

• GMC Denali

  2023 GMC Sierra 1500 Denali
  Added Mar 2023 • 82 Fuel-ups

  Property of behler

• 18.9 Avg MPG

• AT4

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 46 Fuel-ups

  Property of jlkeiser70

• 24.5 Avg MPG

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