Based on data from 136 vehicles, 5,733 fuel-ups and 2,205,901 miles of driving, the 2023 GMC Sierra 1500 gets a combined Avg MPG of 21.18 with a 0.16 MPG margin of error.

Any Engine Type 2.7L L4 GAS (5) 3.0L L6 DIESEL (79) 5.3L V8 GAS (16) 6.2L V8 GAS (19) Any Body Style Extended Cab Pickup (1) Crew Cab Pickup (31) Any Submodel Pro (1) SLE (2) AT4X (7) Denali Ultimate (8) SLT (19) Elevation (21) Denali (28) AT4 (50)

Below you can see a distribution of the fuel-ups with 53 outliers (0.92%) removed.

Following shows the average MPG of each of the 136 vehicles in the system.

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• Jimmy

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jun 2023 • 48 Fuel-ups

  Property of Ceteked

• 27.0 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 71 Fuel-ups

  Property of colesims

• 25.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4X
  Added Apr 2023 • 102 Fuel-ups

  Property of bksatx

• 14.2 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Denali Ultimate 6.2L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 189 Fuel-ups

  Property of tlrskunk

• 16.8 Avg MPG

• Da Sierra 1500

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

  Property of tadder52

• 21.9 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2023 • 44 Fuel-ups

  Property of ScubaJ13

• 24.7 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 3.0L L6 DIESEL Automatic 10 Speed
  Added Aug 2024 • 19 Fuel-ups

  Property of eswanson

• 25.8 Avg MPG

• Jimmy

  2023 GMC Sierra 1500 Elevation 2.7L L4 GAS Automatic 8 Speed Crew Cab Pickup
  Added Sep 2023 • 48 Fuel-ups

  Property of Cadam96

• 21.3 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2024 • 86 Fuel-ups

  Property of codymast

• 25.8 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4X 6.2L V8 GAS Automatic 10 Speed
  Added Apr 2024 • 32 Fuel-ups

  Property of m_inkley

• 16.4 Avg MPG

• Walt’s Truck

  2023 GMC Sierra 1500 Denali 5.3L V8 GAS Automatic 10 Speed
  Added Oct 2023 • 63 Fuel-ups

  Property of wcgoggin

• 17.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 10 Speed
  Added Jun 2023 • 187 Fuel-ups

  Property of artmax480

• 19.6 Avg MPG

• My Sierra 1500 mini max

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Sep 2023 • 58 Fuel-ups

  Property of jimmyag

• 29.6 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 5.3L V8 GAS Automatic 8 Speed
  Added Nov 2024 • 7 Fuel-ups

  Property of pancakecheenis

• 16.5 Avg MPG

• Squeegee Slinging Mobile

  2023 GMC Sierra 1500 Denali 6.2L V8 GAS Automatic 10 Speed Crew Cab Pickup
  Added Jul 2024 • 39 Fuel-ups

  Property of mmstone24

• 16.5 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 Elevation 3.0L L6 DIESEL Automatic 10 Speed
  Added Jul 2023 • 33 Fuel-ups

  Property of DuramaxLZO

• 22.2 Avg MPG

• My Sierra

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Apr 2023 • 48 Fuel-ups

  Property of Armro

• 26.1 Avg MPG

• My Sierra 1500

  2023 GMC Sierra 1500 AT4 3.0L L6 DIESEL Automatic 10 Speed
  Added Oct 2023 • 63 Fuel-ups

  Property of Harvey8125

• 24.1 Avg MPG

• 2023 GMC Sierra 1500 AT4

  2023 GMC Sierra 1500 AT4
  Added Dec 2022 • 71 Fuel-ups

  Property of ndorval

• 21.8 Avg MPG

• GMC Denali

  2023 GMC Sierra 1500 Denali
  Added Mar 2023 • 88 Fuel-ups

  Property of behler

• 18.8 Avg MPG

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