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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• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 8 Speed
  Added Jun 2023 • 46 Fuel-ups

  Property of gmuick

• 15.2 Avg MPG

• 2023 Sierra Denali

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Dec 2022 • 43 Fuel-ups

  Property of leloup6989

• 25.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
  Added May 2023 • 17 Fuel-ups

  Property of lvmailman

• 17.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4
  Added Feb 2023 • 72 Fuel-ups

  Property of tunit21

• 23.1 Avg MPG

• My GMC DENALI

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Mar 2023 • 16 Fuel-ups

  Property of dmac1026

• 19.0 Avg MPG

• 2023 GMC AT4

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Jun 2023 • 28 Fuel-ups

  Property of RamIdaho

• 25.8 Avg MPG

• Sierra 1500 (Black Betty)

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 18 Fuel-ups

  Property of Skully54

• 28.6 Avg MPG

• My Sierra 1500 AT4

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Jun 2024 • 28 Fuel-ups

  Property of Highfreak

• 20.0 Avg MPG

• My Sierra 1500

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

  Property of DuramaxLZO

• 22.1 Avg MPG

• 2023 GMC Sierra 1500 AT4

  2023 GMC Sierra 1500 AT4
  Added Dec 2022 • 68 Fuel-ups

  Property of ndorval

• 21.7 Avg MPG

• My Sierra 1500

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

  Property of mskalak

• 24.2 Avg MPG

• AT4 CarbonPro

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Sep 2023 • 29 Fuel-ups

  Property of CarbonPro

• 25.1 Avg MPG

• Willow

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 94 Fuel-ups

  Property of buddyc48

• 21.2 Avg MPG

• Jimmy

  2023 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed Crew Cab Pickup
  Added Sep 2023 • 43 Fuel-ups

  Property of Cadam96

• 21.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 6.2L V8 GAS Automatic 10 Speed
  Added Jul 2023 • 13 Fuel-ups

  Property of tennesseesmith

• 17.2 Avg MPG

• AT4

  2023 GMC Sierra 1500 AT4 6.2L V8 GAS Automatic 10 Speed
  Added Aug 2023 • 100 Fuel-ups

  Property of Sicario8690

• 15.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed
  Added Nov 2023 • 35 Fuel-ups

  Property of Brut

• 16.8 Avg MPG

• ‘23 GMC Sierra Denali - Ruby

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 26 Fuel-ups

  Property of Sparking1

• 25.6 Avg MPG

• 2023 Sierra 1500

  2023 GMC Sierra 1500 Pro 2.7L L4 GAS Automatic 8 Speed
  Added May 2024 • 6 Fuel-ups

  Property of cacf999

• 19.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Feb 2023 • 176 Fuel-ups

  Property of alm3287

• 26.4 Avg MPG

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