Based on data from 116 vehicles, 3,258 fuel-ups and 1,239,204 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.

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• 23 Sierra

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL
  Added Sep 2023 • 15 Fuel-ups

  Property of Dura-Brad

• 24.8 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 6.2L V8 GAS Automatic 10 Speed
  Added Jul 2023 • 7 Fuel-ups

  Property of tennesseesmith

• 19.9 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 ShaKiraLee

• 22.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Dec 2023 • 6 Fuel-ups

  Property of pitty27

• 25.8 Avg MPG

• 2023 GMC Denali

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 20 Fuel-ups

  Property of RyanLecuyer

• 21.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 21 Fuel-ups

  Property of btango05

• 25.7 Avg MPG

• My Sierra 1500

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

  Property of cruse

• 18.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali
  Added Jan 2023 • 49 Fuel-ups

  Property of jrwayne4

• 25.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed
  Added May 2023 • 30 Fuel-ups

  Property of farmer4ia

• 18.7 Avg MPG

• My Slt

  2023 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Apr 2023 • 3 Fuel-ups

  Property of bbiles1

• 20.5 Avg MPG

• GMC

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

  Property of detmar

• 18.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali
  Added Mar 2023 • 31 Fuel-ups

  Property of russ9443

• 16.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 30 Fuel-ups

  Property of Trevizo

• 18.4 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 9 Fuel-ups

  Property of tjchaffee

• 22.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2023 • 7 Fuel-ups

  Property of mwood40

• 21.8 Avg MPG

• Sierra AT4

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 21 Fuel-ups

  Property of Calvin6393

• 21.4 Avg MPG

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