Based on data from 132 vehicles, 5,395 fuel-ups and 2,083,391 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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• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 56 Fuel-ups

  Property of Harvey8125

• 24.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 8 Speed
  Added Nov 2024 • 3 Fuel-ups

  Property of pancakecheenis

• 17.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed
  Added Jul 2023 • 38 Fuel-ups

  Property of pbc84

• 18.8 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 Elevation 5.3L V8 GAS Automatic 8 Speed
  Added Jun 2023 • 47 Fuel-ups

  Property of gmuick

• 15.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 43 Fuel-ups

  Property of Fubar247

• 22.9 Avg MPG

• Denali

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 38 Fuel-ups

  Property of mysticpeanut

• 17.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 60 Fuel-ups

  Property of tdclapp88

• 23.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4
  Added Feb 2023 • 73 Fuel-ups

  Property of tunit21

• 23.1 Avg MPG

• My Sierra 1500

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

  Property of m_inkley

• 16.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed
  Added May 2023 • 52 Fuel-ups

  Property of farmer4ia

• 20.1 Avg MPG

• Rush

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2023 • 40 Fuel-ups

  Property of G35lover

• 21.8 Avg MPG

• Squeegee Slinging Mobile

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2024 • 29 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 Jul 2024 • 13 Fuel-ups

  Property of Thickdickdaddy

• 19.2 Avg MPG

• My Sierra 1500 Again

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 30 Fuel-ups

  Property of shiftracer247

• 26.3 Avg MPG

• My Sierra 1500

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

  Property of Fuzzy-69

• 24.3 Avg MPG

• Walter

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Mar 2024 • 32 Fuel-ups

  Property of dynmite

• 20.7 Avg MPG

• Denali

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

  Property of joemwade

• 15.8 Avg MPG

• GMC Denali

  2023 GMC Sierra 1500 Denali
  Added Mar 2023 • 81 Fuel-ups

  Property of behler

• 18.9 Avg MPG

• My Sierra 1500

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

  Property of RickRichard

• 26.8 Avg MPG

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