Based on data from 26 vehicles, 644 fuel-ups and 205,864 miles of driving, the 2024 GMC Sierra 3500 HD gets a combined Avg MPG of 12.44 with a 0.35 MPG margin of error.

Any Engine Type V8 DIESEL (8) Any Body Style Crew Cab Pickup (10) Cab & Chassis - Crew Cab (1) Any Submodel Pro (1) SLE (2) Denali (5) Denali Ultimate (7) AT4 (11)

Below you can see a distribution of the fuel-ups with 6 outliers (0.92%) removed.

Following shows the average MPG of each of the 26 vehicles in the system.

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• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD AT4
  Added Mar 2024 • 4 Fuel-ups

  Property of DMaxTRR

• 14.2 Avg MPG

• The Beast

  2024 GMC Sierra 3500 HD AT4
  Added May 2023 • 73 Fuel-ups

  Property of aaronfoster1210

• 13.2 Avg MPG

• 24 GMC 3500HD

  2024 GMC Sierra 3500 HD SLE V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Nov 2023 • 63 Fuel-ups

  Property of lnikkel

• 6.3 Avg MPG

• GMC 3500

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Cab & Chassis - Crew Cab
  Added Mar 2024 • 8 Fuel-ups

  Property of audreez

• 14.3 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Pro
  Added Oct 2023 • 48 Fuel-ups

  Property of marlinsmucker

• 12.0 Avg MPG

• 2024 GMC 3500 HD AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 33 Fuel-ups

  Property of AlanWilliams

• 15.0 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali
  Added Jun 2023 • 83 Fuel-ups

  Property of NM_Bob

• 11.9 Avg MPG

• 2024 GMC 3500

  2024 GMC Sierra 3500 HD SLE Automatic 10 Speed Crew Cab Pickup
  Added Jun 2023 • 37 Fuel-ups

  Property of istbenz

• 9.2 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Aug 2023 • 24 Fuel-ups

  Property of exrr35

• 16.8 Avg MPG

• AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 35 Fuel-ups

  Property of Dbrown279

• 16.1 Avg MPG

• Bigger Blue

  2024 GMC Sierra 3500 HD Denali Ultimate V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Dec 2023 • 21 Fuel-ups

  Property of Mustanglover3233

• 11.4 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali
  Added Jan 2024 • 14 Fuel-ups

  Property of macdb

• 11.2 Avg MPG

• Big Red

  2024 GMC Sierra 3500 HD Denali
  Added Sep 2023 • 27 Fuel-ups

  Property of suasman

• 14.3 Avg MPG

• GMC Sierra 3500 HD

  2024 GMC Sierra 3500 HD AT4
  Added Jun 2023 • 65 Fuel-ups

  Property of petertimmer1

• 16.5 Avg MPG

• 2024 AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 28 Fuel-ups

  Property of DentilGMC

• 12.5 Avg MPG

• 2024 3500 HD

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Dec 2023 • 7 Fuel-ups

  Property of mhab12

• 14.5 Avg MPG

• 2024 GMC Sierra 3500HD

  2024 GMC Sierra 3500 HD Denali Crew Cab Pickup
  Added Aug 2023 • 24 Fuel-ups

  Property of pputney

• 11.4 Avg MPG

• Mammoth

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

  Property of CStreff

• 17.3 Avg MPG

• 24 Ultimate

  2024 GMC Sierra 3500 HD Denali Ultimate V8 DIESEL Automatic Crew Cab Pickup
  Added Nov 2023 • 17 Fuel-ups

  Property of jlawles2

• 16.2 Avg MPG

• Big Knuckles

  2024 GMC Sierra 3500 HD AT4
  Added Sep 2023 • 26 Fuel-ups

  Property of xmanayala

• 11.9 Avg MPG

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