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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• Sierra 1500 AT4

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 53 Fuel-ups

  Property of bmudd89

• 22.7 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

  2023 GMC Sierra 1500 Denali Ultimate 6.2L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 178 Fuel-ups

  Property of tlrskunk

• 16.8 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 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 90 Fuel-ups

  Property of Dkelley03

• 22.5 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

• Sierra 1500 AT4

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 69 Fuel-ups

  Property of cdean72

• 19.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Nov 2024 • 3 Fuel-ups

  Property of kmcnew

• 23.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 98 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 Oct 2023 • 58 Fuel-ups

  Property of coachaugie

• 20.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 59 Fuel-ups

  Property of tdclapp88

• 23.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2024 • 13 Fuel-ups

  Property of eswanson

• 26.3 Avg MPG

• Lucille Ball

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Jun 2023 • 66 Fuel-ups

  Property of jsaunders216

• 22.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 60 Fuel-ups

  Property of Rigid883

• 21.0 Avg MPG

• GMC Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jun 2024 • 23 Fuel-ups

  Property of Billy22

• 19.0 Avg MPG

• Titanium Rush

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 40 Fuel-ups

  Property of wmwest74

• 25.8 Avg MPG

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