How many miles per gallon does a 2024 GMC 2500hd diesel get?

The 2024 GMC 2500HD diesel model is rated to achieve an average of 20 miles per gallon (mpg) in combined city and highway driving. This fuel efficiency figure applies to the 2500HD equipped with the available 6.6-liter Duramax turbo-diesel V8 engine, which is one of the powertrain options for this heavy-duty pickup truck.

Detailed Fuel Economy Breakdown

The 2024 GMC 2500HD diesel's fuel economy can be broken down as follows:

• City driving: 18 mpgli>
  
• Highway driving: 22 mpg


• Combined city/highway: 20 mpgli>
  

These figures are based on EPA estimates and real-world testing by automotive reviewers. The 2500HD diesel's fuel efficiency can vary depending on factors such as driving conditions, load, and individual driving habits.

Comparison to Gasoline-Powered 2500HD

In comparison, the 2024 GMC 2500HD equipped with the standard 6.6-liter V8 gasoline engine is rated at 15 mpg city, 20 mpg highway, and 17 mpg combined. The diesel model's higher fuel economy is a key advantage for buyers who prioritize efficiency and lower fuel costs, especially for heavy-duty hauling or towing applications.

Overall, the 2024 GMC 2500HD diesel provides a balance of power and efficiency that makes it a popular choice among heavy-duty truck buyers. Its 20 mpg combined fuel economy rating is competitive within the segment and helps offset the higher initial cost of the diesel powertrain option.

How many miles per gallon does a 2024 GMC Sierra diesel get?

3.0L Duramax Turbo-Diesel Six-Cylinder Engine (2WD): 23 mpg city / 29 mpg highway / 25 mpg combined.

What fuel mileage does a 6.6 l Duramax diesel get?

The 6.6L Duramax engine's MPG varies, but typically ranges from 15-18 MPG for mixed driving and 17-20 MPG for unloaded highway driving. Actual mileage depends heavily on factors like driving conditions, towing, and the specific model year. Some newer models achieve higher efficiency, with a 2025 Silverado HD hitting 20.4 MPG on a controlled highway loop. 
This video shows a fuel economy test of a 2021 Chevy Silverado HD with the 6.6L Duramax engine towing a trailer: 48struckguyjoeYouTube · Jan 15, 2021
Mileage breakdown by driving type: 
This video demonstrates a fuel economy test of a 2024 Chevy Silverado HD Duramax: 57sDaily MotorYouTube · Jun 27, 2023

• Mixed/City: Around 15 MPG or lower, especially with stop-and-go traffic. 
• Highway (unloaded): Typically 17-20 MPG, but can vary with speed. 
• Towing: Expect significantly lower mileage, often in the 10-14 MPG range depending on the load and terrain. 

Factors that influence MPG:

• Towing and load: Hauling heavy loads reduces fuel efficiency. 
• Driving conditions: Hilly terrain or stop-and-go city traffic lowers MPG. 
• Vehicle age and break-in: Newer trucks may improve after an initial break-in period, with some owners reporting increased mileage after a few thousand miles. 
• Other factors: Speed, road conditions, and factors like the truck's emissions system (e.g., temporary DPF regen cycles) can also have an effect. 

You can watch this video to see real-world mileage results for a 2022 GMC Sierra 2500 Duramax: 1mDaily MotorYouTube · Mar 26, 2022

How many miles per gallon does a GMC 2500HD diesel get?

With the standard gasoline engine, you can expect an average of 14 MPG in the city and 19 MPG on the highway. The 2025 Duramax diesel engine offers improved fuel economy, averaging 17 MPG in the city and 23 MPG on the highway—a notable improvement over the 2024 model.

How many miles per gallon does a 2024 2500hd Duramax get?

The 2024 Duramax 2500 has an estimated combined fuel economy of around 14-15 MPG, with real-world highway and city driving results varying based on factors like trim, drivetrain, and driving conditions. Highway mileage can range from the high teens to low 20s, while city driving is generally lower. 
This video shows a fuel economy test of a 2024 Chevy Silverado Duramax diesel: 57sDaily MotorYouTube · Jun 27, 2023
Estimated and real-world MPG 

• Combined: Approximately 14-15 MPG, based on combined estimates. 
• Highway: Varies by trim and configuration, but real-world tests show figures between 18-21 MPG for some models, and as high as 19.6 MPG in a 400-mile trip with cruise control set to 78 mph. 
• City: Estimates range from 16-18 MPG, depending on the trim. 
• Towing: Real-world figures drop significantly when towing. One test showed 11.5 MPG while towing a trailer, while another reported 9 MPG when towing. 

Factors that affect MPG

• Trim and configuration: Higher trims (LTZ, High Country) may have lower MPG ratings due to added weight and features, while base models like the Work Truck and Custom can achieve higher numbers. 
• Drivetrain: Two-wheel drive (2WD) models generally have better fuel economy than four-wheel drive (4WD) models. 
• Driving conditions: Your actual MPG will vary depending on the terrain, your driving style, speed, and whether you are towing a load. 

You can watch this video to see a 14,000 lb trailer being towed by the truck: 1mGetty's GarageYouTube · Apr 28, 2024