Based on data from 48 vehicles, 2,173 fuel-ups and 666,956 miles of driving, the 2024 GMC Sierra 3500 HD gets a combined Avg MPG of 12.12 with a 0.20 MPG margin of error.

Any Engine Type L5 DIESEL (1) V8 DIESEL (11) Any Body Style Crew Cab Pickup (13) Cab & Chassis - Crew Cab (2) Any Submodel SLE (3) Pro (3) Denali (11) Denali Ultimate (14) AT4 (16) Other (1)

Below you can see a distribution of the fuel-ups with 25 outliers (1.14%) removed.

Following shows the average MPG of each of the 48 vehicles in the system.

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• GMC Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Aug 2024 • 16 Fuel-ups

  Property of ndsewall

• 15.5 Avg MPG

• AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 73 Fuel-ups

  Property of Dbrown279

• 15.7 Avg MPG

• 24 GMC 3500HD

  2024 GMC Sierra 3500 HD SLE V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Nov 2023 • 234 Fuel-ups

  Property of lnikkel

• 6.3 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Pro
  Added Oct 2023 • 170 Fuel-ups

  Property of marlinsmucker

• 11.9 Avg MPG

• 2024 3500 HD

  2024 GMC Sierra 3500 HD Denali
  Added Jun 2024 • 17 Fuel-ups

  Property of joh02051

• 15.9 Avg MPG

• Mammoth

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Feb 2024 • 72 Fuel-ups

  Property of CStreff

• 16.8 Avg MPG

• 24 Ultimate

  2024 GMC Sierra 3500 HD Denali Ultimate V8 DIESEL Automatic Crew Cab Pickup
  Added Nov 2023 • 66 Fuel-ups

  Property of jlawles2

• 15.0 Avg MPG

• Bigger Blue

  2024 GMC Sierra 3500 HD Denali Ultimate V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Dec 2023 • 90 Fuel-ups

  Property of Mustanglover3233

• 10.7 Avg MPG

• 2025 Sierra 3500HD AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Feb 2025 • 14 Fuel-ups

  Property of RobBryce

• 12.7 Avg MPG

• 2024 Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali
  Added Sep 2024 • 10 Fuel-ups

  Property of cueland

• 13.8 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Jun 2024 • 51 Fuel-ups

  Property of klintdog

• 10.8 Avg MPG

• Tom’s GMC 2024 (Quick Silver)

  2024 GMC Sierra 3500 HD AT4
  Added Dec 2024 • 12 Fuel-ups

  Property of mccaffrey5

• 10.9 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Aug 2023 • 53 Fuel-ups

  Property of exrr35

• 16.6 Avg MPG

• Truck

  2024 GMC Sierra 3500 HD Denali Ultimate V8 DIESEL Automatic 10 Speed Cab & Chassis - Crew Cab
  Added May 2024 • 46 Fuel-ups

  Property of stv

• 13.4 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD AT4
  Added May 2024 • 45 Fuel-ups

  Property of SoCo

• 11.6 Avg MPG

• Ol’ Blue

  2024 GMC Sierra 3500 HD Denali
  Added Mar 2024 • 56 Fuel-ups

  Property of GuBulldogs

• 13.4 Avg MPG

• 2024 AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 62 Fuel-ups

  Property of DentilGMC

• 12.1 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD AT4
  Added Mar 2024 • 47 Fuel-ups

  Property of DMaxTRR

• 14.5 Avg MPG

• My Sierra 3500 HD AT4

  2024 GMC Sierra 3500 HD AT4
  Added Jun 2024 • 20 Fuel-ups

  Property of rzrscubasteve03

• 13.7 Avg MPG

• Sierra 3500 HD

  2024 GMC Sierra 3500 HD SLE
  Added Jan 2025 • 3 Fuel-ups

  Property of wakerunner08

• 13.3 Avg MPG

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