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.

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• My Sierra 1500

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 38 Fuel-ups

  Property of jcrodgers17

• 23.7 Avg MPG

• Sierra 1500 (Black Betty)

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

  Property of Skully54

• 28.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4X
  Added Apr 2023 • 60 Fuel-ups

  Property of bksatx

• 13.9 Avg MPG

• GMC Sierra 1500

  2023 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed
  Added Nov 2023 • 14 Fuel-ups

  Property of cshirley

• 16.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added May 2023 • 24 Fuel-ups

  Property of Fubar247

• 22.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 6.2L V8 GAS Automatic 10 Speed
  Added Oct 2023 • 13 Fuel-ups

  Property of mstagner

• 14.9 Avg MPG

• truck

  2023 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Sep 2023 • 40 Fuel-ups

  Property of rob_gio

• 16.3 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

• AT4

  2023 GMC Sierra 1500 AT4
  Added Mar 2023 • 33 Fuel-ups

  Property of jlkeiser70

• 24.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2023 • 27 Fuel-ups

  Property of pascalspeed

• 20.2 Avg MPG

• Red

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 5 Fuel-ups

  Property of l8TMike

• 23.6 Avg MPG

• My Sierra 1500

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

  Property of ryanbaroni

• 23.7 Avg MPG

• Summer

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jun 2023 • 32 Fuel-ups

  Property of LiquidOceot

• 22.2 Avg MPG

• My GMC DENALI

  2023 GMC Sierra 1500 Denali 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Mar 2023 • 5 Fuel-ups

  Property of dmac1026

• 19.1 Avg MPG

• Steve's Pick Up

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 10 Speed Extended Cab Pickup
  Added Sep 2023 • 17 Fuel-ups

  Property of stevez494

• 28.7 Avg MPG

• Jimmy

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jun 2023 • 26 Fuel-ups

  Property of Ceteked

• 26.9 Avg MPG

• GMC

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 25 Fuel-ups

  Property of dak4deals

• 23.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
  Added May 2023 • 13 Fuel-ups

  Property of lvmailman

• 17.3 Avg MPG

• B&S Truck 335

  2023 GMC Sierra 1500 SLE 2.7L L4 GAS Automatic 10 Speed
  Added Sep 2023 • 62 Fuel-ups

  Property of rcrayj

• 18.6 Avg MPG

• 23AT4

  2023 GMC Sierra 1500 AT4 Automatic 10 Speed Crew Cab Pickup
  Added Nov 2023 • 13 Fuel-ups

  Property of TiffaniennJoe

• 24.3 Avg MPG

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