Based on data from 97 vehicles, 2,538 fuel-ups and 913,062 miles of driving, the 2024 GMC Sierra 2500 HD gets a combined Avg MPG of 13.72 with a 0.13 MPG margin of error.

Any Engine Type 6.6L V8 DIESEL (85) 6.6L V8 GAS (11) V8 DIESEL (1) Any Body Style Standard Cab Pickup (1) Crew Cab Pickup (12) Any Submodel Pro (4) SLE (8) SLT (12) Denali (17) Denali Ultimate (19) AT4 (36) Other (1)

Below you can see a distribution of the fuel-ups with 18 outliers (0.70%) removed.

Following shows the average MPG of each of the 97 vehicles in the system.

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• My Sierra 2500 HD

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

  Property of jblythe

• 13.7 Avg MPG

• 2024 GMC Sierra 2500 HD

  2024 GMC Sierra 2500 HD SLE 6.6L V8 GAS
  Added Oct 2023 • 38 Fuel-ups

  Property of iragobat

• 11.9 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Nov 2024 • 48 Fuel-ups

  Property of webbman81

• 14.6 Avg MPG

• Grey Ghost

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Apr 2024 • 32 Fuel-ups

  Property of wondergeek

• 14.3 Avg MPG

• New Denali HD

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

  Property of Sullivan907

• 15.1 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
  Added Nov 2024 • 7 Fuel-ups

  Property of slickbrave

• 14.4 Avg MPG

• 2024 2500 HD AT4

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added May 2024 • 7 Fuel-ups

  Property of mkfe47

• 15.7 Avg MPG

• Denali Diesel

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jan 2024 • 23 Fuel-ups

  Property of WinePress

• 13.6 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
  Added Dec 2023 • 47 Fuel-ups

  Property of cmmsweet

• 13.4 Avg MPG

• 2500 HD AT4X

  2024 GMC Sierra 2500 HD AT4X AEV V8 DIESEL
  Added Mar 2024 • 24 Fuel-ups

  Property of MYOR91ZV

• 14.0 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2024 • 25 Fuel-ups

  Property of jessie02

• 13.0 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added May 2024 • 44 Fuel-ups

  Property of jspeck29

• 15.3 Avg MPG

• Sierra 2500 HD Denali Ultimate

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

  Property of RebelPlumber

• 15.3 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 • 24 Fuel-ups

  Property of fox454

• 13.6 Avg MPG

• Sierra 2500 HD Ultimate

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Oct 2023 • 74 Fuel-ups

  Property of flymhi

• 14.0 Avg MPG

• Dee Sierra 2500 HD

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

  Property of deewhite

• 12.4 Avg MPG

• myGMC

  2024 GMC Sierra 2500 HD Denali Ultimate 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2023 • 71 Fuel-ups

  Property of iPCFX

• 15.1 Avg MPG

• Lance’s truck

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

  Property of southernu

• 12.6 Avg MPG

• AT4

  2024 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2023 • 73 Fuel-ups

  Property of MEMatta

• 16.2 Avg MPG

• My Sierra 2500 HD

  2024 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 10 Speed
  Added Apr 2024 • 71 Fuel-ups

  Property of cabraud108

• 11.6 Avg MPG

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