Based on data from 114 vehicles, 3,097 fuel-ups and 1,176,546 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.06 with a 0.21 MPG margin of error.

Any Engine Type 2.7L L4 GAS (4) 3.0L L6 DIESEL (67) 5.3L V8 GAS (13) 6.2L V8 GAS (13) Any Body Style Extended Cab Pickup (1) Crew Cab Pickup (25) Any Submodel SLE (1) AT4X (3) Denali Ultimate (8) SLT (18) Elevation (20) Denali (21) AT4 (43)

Below you can see a distribution of the fuel-ups with 31 outliers (0.99%) removed.

Following shows the average MPG of each of the 114 vehicles in the system.

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• Titanium Rush

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 19 Fuel-ups

  Property of wmwest74

• 25.3 Avg MPG

• AT4

  2023 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
  Added Aug 2023 • 67 Fuel-ups

  Property of Sicario8690

• 14.9 Avg MPG

• Jonathon’s GMC

  2023 GMC Sierra 1500 Elevation
  Added Jan 2023 • 72 Fuel-ups

  Property of luc_sko

• 26.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 34 Fuel-ups

  Property of coachaugie

• 20.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 6.2L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 101 Fuel-ups

  Property of tlrskunk

• 16.8 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 myat4

• 21.1 Avg MPG

• Willow

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 63 Fuel-ups

  Property of buddyc48

• 20.3 Avg MPG

• 2023 AT4

  2023 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 66 Fuel-ups

  Property of ionsense

• 20.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
  Added Mar 2024 • 6 Fuel-ups

  Property of 01rc51

• 15.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed
  Added Jan 2024 • 11 Fuel-ups

  Property of scoutmaster

• 24.4 Avg MPG

• 2023 Sierra 1500

  2023 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
  Added Aug 2023 • 56 Fuel-ups

  Property of wolfedyl

• 21.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2024 • 9 Fuel-ups

  Property of petereic

• 22.6 Avg MPG

• Presious 2.0

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

  Property of njaybong

• 23.9 Avg MPG

• myAT4

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added May 2023 • 45 Fuel-ups

  Property of corneliani

• 23.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 112 Fuel-ups

  Property of artmax480

• 20.1 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 RickRichard

• 26.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2024 • 7 Fuel-ups

  Property of JFerenczi

• 28.3 Avg MPG

• My Sierra 1500 mini max

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 27 Fuel-ups

  Property of jimmyag

• 29.2 Avg MPG

• AT4X

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Feb 2023 • 80 Fuel-ups

  Property of ralph_tony

• 13.7 Avg MPG

• Dalton Sierra 1500

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed
  Added Aug 2023 • 65 Fuel-ups

  Property of deewhite

• 19.2 Avg MPG

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