Based on data from 47 vehicles, 1,914 fuel-ups and 587,984 miles of driving, the 2024 GMC Sierra 3500 HD gets a combined Avg MPG of 12.15 with a 0.21 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 (2) Pro (3) Denali (11) Denali Ultimate (14) AT4 (16) Other (1)

Below you can see a distribution of the fuel-ups with 21 outliers (1.09%) removed.

Following shows the average MPG of each of the 47 vehicles in the system.

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• 24 GMC 3500HD

  2024 GMC Sierra 3500 HD SLE V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Nov 2023 • 195 Fuel-ups

  Property of lnikkel

• 6.3 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali
  Added Jan 2024 • 70 Fuel-ups

  Property of macdb

• 10.5 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Pro
  Added Oct 2023 • 146 Fuel-ups

  Property of marlinsmucker

• 11.9 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD AT4
  Added May 2024 • 40 Fuel-ups

  Property of SoCo

• 11.6 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali
  Added Jan 2025 • 5 Fuel-ups

  Property of kcfire

• 15.1 Avg MPG

• GMC Sierra 3500 HD

  2024 GMC Sierra 3500 HD AT4
  Added Jun 2023 • 136 Fuel-ups

  Property of petertimmer1

• 16.7 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD AT4
  Added Mar 2024 • 40 Fuel-ups

  Property of DMaxTRR

• 14.3 Avg MPG

• 2024 3500 HD

  2024 GMC Sierra 3500 HD Denali
  Added Jun 2024 • 15 Fuel-ups

  Property of joh02051

• 16.0 Avg MPG

• 2024 AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 49 Fuel-ups

  Property of DentilGMC

• 12.3 Avg MPG

• AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Nov 2023 • 48 Fuel-ups

  Property of Rustyg23

• 12.8 Avg MPG

• 24 Ultimate

  2024 GMC Sierra 3500 HD Denali Ultimate V8 DIESEL Automatic Crew Cab Pickup
  Added Nov 2023 • 58 Fuel-ups

  Property of jlawles2

• 14.8 Avg MPG

• Sierra 3500 HD Denali Ultimate

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Nov 2024 • 20 Fuel-ups

  Property of Woody321

• 12.9 Avg MPG

• Big Red

  2024 GMC Sierra 3500 HD Denali
  Added Sep 2023 • 64 Fuel-ups

  Property of suasman

• 13.4 Avg MPG

• 2025 Sierra 3500HD AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Feb 2025 • 4 Fuel-ups

  Property of RobBryce

• 11.7 Avg MPG

• GMC Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Aug 2024 • 9 Fuel-ups

  Property of ndsewall

• 14.7 Avg MPG

• 2024 3500 HD

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Dec 2023 • 26 Fuel-ups

  Property of mhab12

• 14.1 Avg MPG

• 2024 GMC 3500

  2024 GMC Sierra 3500 HD SLE Automatic 10 Speed Crew Cab Pickup
  Added Jun 2023 • 63 Fuel-ups

  Property of istbenz

• 9.3 Avg MPG

• 2024 GMC 3500 HD AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 82 Fuel-ups

  Property of AlanWilliams

• 14.3 Avg MPG

• 2024 GMC Sierra 3500HD

  2024 GMC Sierra 3500 HD Denali Crew Cab Pickup
  Added Aug 2023 • 51 Fuel-ups

  Property of pputney

• 10.9 Avg MPG

• Mammoth

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Feb 2024 • 64 Fuel-ups

  Property of CStreff

• 16.8 Avg MPG

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