Based on data from 139 vehicles, 6,054 fuel-ups and 2,323,290 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.14 with a 0.15 MPG margin of error.

Any Engine Type 2.7L L4 GAS (5) 3.0L L6 DIESEL (81) 5.3L V8 GAS (17) 6.2L V8 GAS (19) Any Body Style Extended Cab Pickup (1) Crew Cab Pickup (33) Any Submodel Pro (1) SLE (2) AT4X (7) Denali Ultimate (8) SLT (19) Elevation (21) Denali (29) AT4 (52)

Below you can see a distribution of the fuel-ups with 54 outliers (0.88%) removed.

Following shows the average MPG of each of the 139 vehicles in the system.

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• GMC Denali

  2023 GMC Sierra 1500 Denali
  Added Mar 2023 • 95 Fuel-ups

  Property of behler

• 18.8 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 196 Fuel-ups

  Property of artmax480

• 19.6 Avg MPG

• Walter

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

  Property of dynmite

• 20.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Jun 2023 • 50 Fuel-ups

  Property of mskalak

• 23.8 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2023 • 35 Fuel-ups

  Property of DuramaxLZO

• 22.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 75 Fuel-ups

  Property of colesims

• 25.0 Avg MPG

• AT4

  2023 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
  Added Aug 2023 • 105 Fuel-ups

  Property of Sicario8690

• 15.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 6.2L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 203 Fuel-ups

  Property of tlrskunk

• 16.7 Avg MPG

• 2023 Sierra Denali

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Dec 2022 • 46 Fuel-ups

  Property of leloup6989

• 25.2 Avg MPG

• Titanium Rush

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 51 Fuel-ups

  Property of wmwest74

• 25.8 Avg MPG

• My Sierra 1500

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

  Property of HuskerDustoff

• 23.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Nov 2024 • 37 Fuel-ups

  Property of TNRAMBox

• 15.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 29 Fuel-ups

  Property of Fuzzy-69

• 23.9 Avg MPG

• Jimmy

  2023 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed Crew Cab Pickup
  Added Sep 2023 • 51 Fuel-ups

  Property of Cadam96

• 21.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 10 Speed
  Added Oct 2023 • 35 Fuel-ups

  Property of mstagner

• 15.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4
  Added Feb 2023 • 79 Fuel-ups

  Property of tunit21

• 23.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Dec 2023 • 41 Fuel-ups

  Property of CJ804

• 24.5 Avg MPG

• Phil's GMC

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jan 2025 • 7 Fuel-ups

  Property of pwo

• 22.8 Avg MPG

• 2023 GMC AT4

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Jun 2023 • 31 Fuel-ups

  Property of RamIdaho

• 25.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed
  Added Jan 2024 • 32 Fuel-ups

  Property of scoutmaster

• 25.1 Avg MPG

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