Based on data from 89 vehicles, 1,851 fuel-ups and 663,672 miles of driving, the 2024 GMC Sierra 2500 HD gets a combined Avg MPG of 13.73 with a 0.15 MPG margin of error.

Any Engine Type 6.6L V8 DIESEL (77) 6.6L V8 GAS (11) V8 DIESEL (1) Any Body Style Standard Cab Pickup (1) Crew Cab Pickup (11) Any Submodel Pro (4) SLE (8) SLT (10) Denali (15) Denali Ultimate (17) AT4 (34) Other (1)

Below you can see a distribution of the fuel-ups with 12 outliers (0.64%) removed.

Following shows the average MPG of each of the 89 vehicles in the system.

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• Sierra 2500 HD Denali Ultimate

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2024 • 27 Fuel-ups

  Property of RebelPlumber

• 14.6 Avg MPG

• Sierra 2500 HD Ultimate

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Oct 2023 • 62 Fuel-ups

  Property of flymhi

• 14.0 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD Pro 6.6L V8 GAS Automatic 10 Speed
  Added Apr 2024 • 79 Fuel-ups

  Property of mikejstanton

• 11.2 Avg MPG

• myGMC

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2023 • 58 Fuel-ups

  Property of iPCFX

• 15.1 Avg MPG

• Sierra 2500 HD

  2024 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2024 • 5 Fuel-ups

  Property of vitman7

• 13.1 Avg MPG

• Dalton Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2024 • 20 Fuel-ups

  Property of deewhite

• 15.9 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Feb 2024 • 42 Fuel-ups

  Property of Droth16

• 15.7 Avg MPG

• BIG RED

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jul 2024 • 37 Fuel-ups

  Property of Thekwthemost

• 10.6 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 10 Speed
  Added Apr 2024 • 58 Fuel-ups

  Property of cabraud108

• 11.5 Avg MPG

• GMC Sierra 2500 HD 2024

  2024 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2023 • 30 Fuel-ups

  Property of markaZ

• 12.3 Avg MPG

• Truck GMC Sierra

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Jun 2023 • 48 Fuel-ups

  Property of MarkY3130

• 13.9 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 10 Speed
  Added Oct 2024 • 5 Fuel-ups

  Property of jrosprey

• 12.6 Avg MPG

• Zeus

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Nov 2023 • 42 Fuel-ups

  Property of lohertz

• 11.8 Avg MPG

• Big Black

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Sep 2023 • 38 Fuel-ups

  Property of Fireman_JB

• 16.5 Avg MPG

• Novelty GMC 2500 HD AT4

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Mar 2024 • 30 Fuel-ups

  Property of Novelty57

• 13.8 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Jun 2024 • 13 Fuel-ups

  Property of wilsonam

• 16.5 Avg MPG

• Grey Ghost

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Apr 2024 • 24 Fuel-ups

  Property of wondergeek

• 14.6 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Apr 2024 • 23 Fuel-ups

  Property of dr-hoo

• 11.0 Avg MPG

• Dee Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2024 • 19 Fuel-ups

  Property of deewhite

• 11.8 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2024 • 9 Fuel-ups

  Property of Mazerk

• 16.5 Avg MPG

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