Based on data from 43 vehicles, 1,599 fuel-ups and 487,870 miles of driving, the 2024 GMC Sierra 3500 HD gets a combined Avg MPG of 12.08 with a 0.23 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 (1.17%) removed.

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

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• My Sierra 3500 HD

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

  Property of TimCheryl

• 12.0 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Jun 2024 • 25 Fuel-ups

  Property of klintdog

• 11.5 Avg MPG

• GMC Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Aug 2024 • 8 Fuel-ups

  Property of ndsewall

• 14.6 Avg MPG

• 2024 3500 HD

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

  Property of joh02051

• 16.1 Avg MPG

• AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Nov 2023 • 43 Fuel-ups

  Property of Rustyg23

• 12.9 Avg MPG

• AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 64 Fuel-ups

  Property of Dbrown279

• 16.2 Avg MPG

• 2024 Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali
  Added Sep 2024 • 3 Fuel-ups

  Property of cueland

• 11.1 Avg MPG

• Ultimo - Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali
  Added Jun 2024 • 54 Fuel-ups

  Property of Ultimo

• 11.0 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali
  Added Sep 2024 • 8 Fuel-ups

  Property of frugalchuck

• 12.4 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Aug 2024 • 6 Fuel-ups

  Property of ChasR535d

• 16.1 Avg MPG

• 2024 AT4

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2023 • 36 Fuel-ups

  Property of DentilGMC

• 12.5 Avg MPG

• Big Red

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

  Property of suasman

• 13.2 Avg MPG

• 2024 GMC Sierra 3500HD

  2024 GMC Sierra 3500 HD Denali Crew Cab Pickup
  Added Aug 2023 • 47 Fuel-ups

  Property of pputney

• 11.0 Avg MPG

• 2024 GMC 3500 HD AT4

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

  Property of AlanWilliams

• 14.4 Avg MPG

• Long Boi

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added May 2024 • 19 Fuel-ups

  Property of Chrisr91

• 16.3 Avg MPG

• A. Snoler bear 2024 GMC 3500

  2024 GMC Sierra 3500 HD Pro
  Added Aug 2024 • 3 Fuel-ups

  Property of t531

• 13.5 Avg MPG

• My Sierra 3500 HD

  2024 GMC Sierra 3500 HD Denali Ultimate
  Added Nov 2023 • 11 Fuel-ups

  Property of slaterx2

• 12.9 Avg MPG

• LG-Remove

  2024 GMC Sierra 3500 HD Pro
  Added Jul 2024 • 4 Fuel-ups

  Property of gprp

• 11.0 Avg MPG

• GMC 3500

  2024 GMC Sierra 3500 HD AT4 V8 DIESEL Automatic 10 Speed Cab & Chassis - Crew Cab
  Added Mar 2024 • 15 Fuel-ups

  Property of audreez

• 13.6 Avg MPG

• 2024 3500 AT4

  2024 GMC Sierra 3500 HD AT4 Automatic 10 Speed Crew Cab Pickup
  Added Apr 2023 • 39 Fuel-ups

  Property of cjp_8476

• 14.6 Avg MPG

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