Based on data from 116 vehicles, 3,256 fuel-ups and 1,238,629 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.07 with a 0.21 MPG margin of error.

Any Engine Type 2.7L L4 GAS (4) 3.0L L6 DIESEL (68) 5.3L V8 GAS (13) 6.2L V8 GAS (14) Any Body Style Extended Cab Pickup (1) Crew Cab Pickup (26) Any Submodel SLE (1) AT4X (4) Denali Ultimate (8) SLT (18) Elevation (20) Denali (21) AT4 (44)

Below you can see a distribution of the fuel-ups with 30 outliers (0.91%) removed.

Following shows the average MPG of each of the 116 vehicles in the system.

• «
• 2
• 3
• 4
• 5
• 6
• »

• JJ’s Jimmy 1500

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed
  Added Aug 2023 • 20 Fuel-ups

  Property of TKPjwlr

• 11.7 Avg MPG

• El Jefe

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 49 Fuel-ups

  Property of PharmD2010

• 14.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed
  Added Jul 2023 • 23 Fuel-ups

  Property of pbc84

• 18.6 Avg MPG

• AT4 CarbonPro

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Sep 2023 • 18 Fuel-ups

  Property of CarbonPro

• 24.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Dec 2023 • 14 Fuel-ups

  Property of jaredaggie

• 24.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Dec 2023 • 12 Fuel-ups

  Property of CJ804

• 25.3 Avg MPG

• 2023 GMC Sierra Elevation 5.3L

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed
  Added Oct 2023 • 29 Fuel-ups

  Property of MontanaSR5

• 19.0 Avg MPG

• Willow

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 65 Fuel-ups

  Property of buddyc48

• 20.5 Avg MPG

• 2023 Sierra 1500

  2023 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
  Added Aug 2023 • 59 Fuel-ups

  Property of wolfedyl

• 21.9 Avg MPG

• Ben's Sexy Beast

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jan 2024 • 8 Fuel-ups

  Property of Beng7782

• 24.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed
  Added Nov 2023 • 18 Fuel-ups

  Property of Brut

• 15.1 Avg MPG

• Duramax 3.0

  2023 GMC Sierra 1500 SLT Automatic 10 Speed Crew Cab Pickup
  Added Sep 2023 • 24 Fuel-ups

  Property of Beener909

• 25.6 Avg MPG

• 2023 Sierra Denali

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Dec 2022 • 34 Fuel-ups

  Property of leloup6989

• 24.9 Avg MPG

• My Sierra 1500

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

  Property of Rigid883

• 23.9 Avg MPG

• 2023 GMC Sierra 1500 SLT

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Jan 2024 • 23 Fuel-ups

  Property of blalk

• 20.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 26 Fuel-ups

  Property of ScubaJ13

• 24.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2023 • 23 Fuel-ups

  Property of DuramaxLZO

• 22.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4
  Added Feb 2023 • 50 Fuel-ups

  Property of tunit21

• 22.8 Avg MPG

• My GMC 1500 AT4 Diesel

  2023 GMC Sierra 1500 AT4
  Added Dec 2022 • 78 Fuel-ups

  Property of Lawdog800

• 22.8 Avg MPG

• Rush

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2023 • 24 Fuel-ups

  Property of G35lover

• 21.5 Avg MPG

• «
• 2
• 3
• 4
• 5
• 6
• »