Based on data from 70 vehicles, 1,289 fuel-ups and 471,986 miles of driving, the 2024 GMC Sierra 2500 HD gets a combined Avg MPG of 14.08 with a 0.18 MPG margin of error.

Any Engine Type 6.6L V8 DIESEL (70) 6.6L V8 GAS (10) V8 DIESEL (1) Any Body Style Standard Cab Pickup (1) Crew Cab Pickup (10) Any Submodel Pro (4) SLE (6) SLT (8) Denali (14) Denali Ultimate (16) AT4 (32) Other (1)

Below you can see a distribution of the fuel-ups with 9 outliers (0.69%) removed.

Following shows the average MPG of each of the 70 vehicles in the system.

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• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Dec 2023 • 40 Fuel-ups

  Property of cmmsweet

• 12.9 Avg MPG

• 2024 GMC Sierra

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Sep 2023 • 21 Fuel-ups

  Property of stevenlpennington

• 13.9 Avg MPG

• My Sierra 2500 HD

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

  Property of Fearless-44

• 14.2 Avg MPG

• 2024 Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Mar 2024 • 16 Fuel-ups

  Property of mike6681

• 13.4 Avg MPG

• Big Black

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Sep 2023 • 34 Fuel-ups

  Property of Fireman_JB

• 16.4 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Apr 2024 • 14 Fuel-ups

  Property of sikk50

• 13.3 Avg MPG

• My Sierra 2500 HD Denali Ultimate

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Jun 2023 • 17 Fuel-ups

  Property of fox454

• 13.5 Avg MPG

• GMC 2500 HD Sierra AT4

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2022 • 24 Fuel-ups

  Property of bradylsw

• 14.8 Avg MPG

• Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Jun 2023 • 20 Fuel-ups

  Property of bikeguru

• 16.6 Avg MPG

• Diesel - 2024 GMC Sierra 2500 HD AT4

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

  Property of compsciguy1217

• 12.0 Avg MPG

• GMC 2500 Denali

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added May 2023 • 41 Fuel-ups

  Property of eclipse5302

• 12.2 Avg MPG

• DEF - 2024 GMC Sierra 2500 HD AT4

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Aug 2024 • 3 Fuel-ups

  Property of compsciguy1217

• 633.5 Avg MPG

• 2024 2500 HD AT4

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added May 2024 • 4 Fuel-ups

  Property of mkfe47

• 15.9 Avg MPG

• 2024 GMC 2500HD AT4

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Feb 2024 • 6 Fuel-ups

  Property of gsxrah

• 15.7 Avg MPG

• Bolt

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Mar 2024 • 24 Fuel-ups

  Property of dntharrison

• 10.7 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2023 • 9 Fuel-ups

  Property of Byoakam28

• 13.2 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Jan 2024 • 26 Fuel-ups

  Property of BenWeaver

• 14.9 Avg MPG

• Sammy

  2024 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 10 Speed
  Added Apr 2024 • 6 Fuel-ups

  Property of bburv

• 14.9 Avg MPG

• Ultimate

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Dec 2023 • 27 Fuel-ups

  Property of gcamp666

• 15.4 Avg MPG

• GMC Sierra 2500 HD

  2024 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
  Added Feb 2024 • 31 Fuel-ups

  Property of Dadowl

• 9.7 Avg MPG

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