Based on data from 43 vehicles, 1,697 fuel-ups and 520,097 miles of driving, the 2024 GMC Sierra 3500 HD gets a combined Avg MPG of 12.09 with a 0.22 MPG margin of error.

Any Engine Type L5 DIESEL (1) V8 DIESEL (10) Any Body Style Crew Cab Pickup (12) Cab & Chassis - Crew Cab (2) Any Submodel SLE (2) Pro (3) Denali (10) Denali Ultimate (13) AT4 (14) Other (1)

Below you can see a distribution of the fuel-ups with 19 outliers (1.11%) removed.

Following shows the average MPG of each of the 43 vehicles in the system.

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• 2024 AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 37 Fuel-ups

  Property of DentilGMC

• 12.4 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali
  Added Jun 2023 • 138 Fuel-ups

  Property of NM_Bob

• 12.3 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD AT4
  Added May 2024 • 33 Fuel-ups

  Property of SoCo

• 11.5 Avg MPG

• 2024 Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali
  Added Sep 2024 • 5 Fuel-ups

  Property of cueland

• 10.4 Avg MPG

• AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 66 Fuel-ups

  Property of Dbrown279

• 16.1 Avg MPG

• 2024 GMC 3500 HD AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 71 Fuel-ups

  Property of AlanWilliams

• 14.3 Avg MPG

• The Beast

  2024 GMC Sierra 3500 HD AT4
  Added May 2023 • 121 Fuel-ups

  Property of aaronfoster1210

• 13.3 Avg MPG

• My Sierra 3500 HD AT4

  2024 GMC Sierra 3500 HD AT4
  Added Jun 2024 • 14 Fuel-ups

  Property of rzrscubasteve03

• 13.8 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD AT4
  Added Mar 2024 • 32 Fuel-ups

  Property of DMaxTRR

• 13.8 Avg MPG

• Big Knuckles

  2024 GMC Sierra 3500 HD AT4
  Added Sep 2023 • 52 Fuel-ups

  Property of xmanayala

• 12.4 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali
  Added Jan 2024 • 65 Fuel-ups

  Property of macdb

• 10.3 Avg MPG

• GMC Sierra 3500 HD

  2024 GMC Sierra 3500 HD AT4
  Added Jun 2023 • 129 Fuel-ups

  Property of petertimmer1

• 16.7 Avg MPG

• LG-Remove

  2024 GMC Sierra 3500 HD Pro
  Added Jul 2024 • 5 Fuel-ups

  Property of gprp

• 13.4 Avg MPG

• Mammoth

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Feb 2024 • 52 Fuel-ups

  Property of CStreff

• 16.9 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Pro
  Added Oct 2023 • 121 Fuel-ups

  Property of marlinsmucker

• 11.9 Avg MPG

• Sierra 3500 HD Denali Ultimate

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Nov 2024 • 11 Fuel-ups

  Property of Woody321

• 12.8 Avg MPG

• 24 GMC 3500HD

  2024 GMC Sierra 3500 HD SLE V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Nov 2023 • 174 Fuel-ups

  Property of lnikkel

• 6.3 Avg MPG

• Truck

  2024 GMC Sierra 3500 HD Denali Ultimate V8 DIESEL Automatic 10 Speed Cab & Chassis - Crew Cab
  Added May 2024 • 39 Fuel-ups

  Property of stv

• 13.4 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Nov 2023 • 12 Fuel-ups

  Property of slaterx2

• 12.8 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Jun 2024 • 28 Fuel-ups

  Property of klintdog

• 11.4 Avg MPG

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