Based on data from 89 vehicles, 1,844 fuel-ups and 661,105 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 (0.65%) removed.

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

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• myGMC

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2023 • 57 Fuel-ups

  Property of iPCFX

• 15.2 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added May 2024 • 36 Fuel-ups

  Property of jspeck29

• 15.3 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 • 16 Fuel-ups

  Property of compsciguy1217

• 12.2 Avg MPG

• Dalton 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

• 15.5 Avg MPG

• AT4

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2023 • 57 Fuel-ups

  Property of MEMatta

• 16.0 Avg MPG

• 2024 Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Mar 2024 • 23 Fuel-ups

  Property of mike6681

• 14.2 Avg MPG

• Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Sep 2024 • 5 Fuel-ups

  Property of milestoempty

• 16.9 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Feb 2024 • 21 Fuel-ups

  Property of daviddennis21

• 13.7 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
  Added Sep 2024 • 3 Fuel-ups

  Property of Redat42024

• 15.1 Avg MPG

• Beast 3.0

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Jan 2024 • 45 Fuel-ups

  Property of BikingDerek

• 12.6 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2023 • 24 Fuel-ups

  Property of Joshua1120

• 13.3 Avg MPG

• Denali Diesel

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jan 2024 • 19 Fuel-ups

  Property of WinePress

• 13.9 Avg MPG

• GMC Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Sep 2024 • 3 Fuel-ups

  Property of Diverb

• 16.4 Avg MPG

• My 2024 Sierra 2500 HD

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

  Property of jmcnally15

• 19.5 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali 6.6L V8 GAS Automatic 10 Speed
  Added Sep 2024 • 15 Fuel-ups

  Property of mikekuhnwv

• 13.1 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2023 • 53 Fuel-ups

  Property of bpford

• 11.8 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 • 44 Fuel-ups

  Property of eclipse5302

• 12.4 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Mar 2024 • 16 Fuel-ups

  Property of Brophy1526

• 14.9 Avg MPG

• Sierra 2500 HD

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

  Property of vitman7

• 13.5 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 • 18 Fuel-ups

  Property of fox454

• 13.5 Avg MPG

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