Based on data from 102 vehicles, 3,393 fuel-ups and 1,229,372 miles of driving, the 2024 GMC Sierra 2500 HD gets a combined Avg MPG of 13.70 with a 0.12 MPG margin of error.

Any Engine Type 6.6L V8 DIESEL (89) 6.6L V8 GAS (12) V8 DIESEL (1) Any Body Style Standard Cab Pickup (1) Crew Cab Pickup (13) Any Submodel Pro (4) SLE (8) SLT (12) Denali (17) Denali Ultimate (20) AT4 (40) Other (1)

Below you can see a distribution of the fuel-ups with 22 outliers (0.64%) removed.

Following shows the average MPG of each of the 102 vehicles in the system.

• «
• 1
• 2
• 3
• 4
• 5
• 6
• »

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 10 Speed
  Added May 2025 • 12 Fuel-ups

  Property of pgfitzgerald

• 10.0 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Feb 2024 • 41 Fuel-ups

  Property of daviddennis21

• 13.6 Avg MPG

• Bolt

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Mar 2024 • 61 Fuel-ups

  Property of dntharrison

• 12.3 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Sep 2024 • 65 Fuel-ups

  Property of acgreen73

• 13.3 Avg MPG

• Silver Storm

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Jun 2025 • 67 Fuel-ups

  Property of Oneflight

• 17.9 Avg MPG

• Dee Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2024 • 54 Fuel-ups

  Property of deewhite

• 12.3 Avg MPG

• Denali Diesel

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jan 2024 • 31 Fuel-ups

  Property of WinePress

• 13.5 Avg MPG

• 2024 Sierra 2500 Duramax

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Mar 2025 • 9 Fuel-ups

  Property of ksd202

• 9.8 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Nov 2024 • 44 Fuel-ups

  Property of Oufnacdm

• 13.0 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Apr 2025 • 8 Fuel-ups

  Property of SeekRest

• 14.2 Avg MPG

• Sierra 2500 HD

  2024 GMC Sierra 2500 HD Pro 6.6L V8 GAS Automatic 10 Speed
  Added Apr 2024 • 125 Fuel-ups

  Property of mikejstanton

• 11.3 Avg MPG

• Dalton Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2024 • 41 Fuel-ups

  Property of deewhite

• 15.8 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Apr 2024 • 40 Fuel-ups

  Property of dr-hoo

• 11.7 Avg MPG

• BIG RED

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jul 2024 • 158 Fuel-ups

  Property of Thekwthemost

• 10.5 Avg MPG

• My Sierra 2500 HD

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

  Property of jblythe

• 13.5 Avg MPG

• Sammy 2

  2024 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 10 Speed
  Added May 2024 • 51 Fuel-ups

  Property of bburv

• 15.6 Avg MPG

• AT4

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2023 • 87 Fuel-ups

  Property of MEMatta

• 16.0 Avg MPG

• New Denali HD

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Sep 2024 • 29 Fuel-ups

  Property of Sullivan907

• 15.7 Avg MPG

• Sierra 2500 HD Ultimate

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Oct 2023 • 84 Fuel-ups

  Property of flymhi

• 13.9 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 10 Speed
  Added Apr 2024 • 87 Fuel-ups

  Property of cabraud108

• 11.7 Avg MPG

• «
• 1
• 2
• 3
• 4
• 5
• 6
• »