Based on data from 55 vehicles, 669 fuel-ups and 245,319 miles of driving, the 2024 GMC Sierra 2500 HD gets a combined Avg MPG of 14.05 with a 0.22 MPG margin of error.

Any Engine Type 6.6L V8 DIESEL (49) 6.6L V8 GAS (5) V8 DIESEL (1) Any Body Style Standard Cab Pickup (1) Crew Cab Pickup (8) Any Submodel Pro (2) SLE (3) SLT (6) Denali (9) Denali Ultimate (13) AT4 (21) Other (1)

Below you can see a distribution of the fuel-ups with 13 outliers (1.91%) removed.

Following shows the average MPG of each of the 55 vehicles in the system.

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• Denali Diesel

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jan 2024 • 5 Fuel-ups

  Property of WinePress

• 14.5 Avg MPG

• Blue

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Sep 2023 • 16 Fuel-ups

  Property of frickandfrack

• 13.9 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2023 • 11 Fuel-ups

  Property of Joshua1120

• 14.1 Avg MPG

• GMC 2500 HD Sierra AT4

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2022 • 19 Fuel-ups

  Property of bradylsw

• 15.2 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2023 • 17 Fuel-ups

  Property of bpford

• 12.0 Avg MPG

• 2024 Sierra Denali HD

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

  Property of Kturner

• 5.0 Avg MPG

• My Sierra 2500 HD AT4

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

  Property of kfllc

• 15.8 Avg MPG

• Hank’s AT4X HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Jan 2024 • 9 Fuel-ups

  Property of Hlranger

• 13.3 Avg MPG

• 2024 Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2023 • 11 Fuel-ups

  Property of scotthamilton

• 13.3 Avg MPG

• Sierra 2500 HD

  2024 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
  Added Sep 2023 • 4 Fuel-ups

  Property of s97042

• 16.8 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Feb 2024 • 17 Fuel-ups

  Property of Oreganoflow

• 14.3 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 • 12 Fuel-ups

  Property of stevenlpennington

• 14.1 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Sep 2023 • 6 Fuel-ups

  Property of cody_tbird07

• 13.9 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Jun 2023 • 15 Fuel-ups

  Property of xmanayala

• 12.0 Avg MPG

• Frosty

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jul 2023 • 5 Fuel-ups

  Property of Tfmadam

• 17.1 Avg MPG

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