How many miles per gallon does a 2022 Duramax Sierra 2500 get?

Typically, the 2022 Sierra 2500HD with the Duramax diesel returns about 12–15 miles per gallon combined, with exact figures depending on drivetrain, cab/bed configuration, and driving conditions.

What drives the MPG numbers?

Fuel economy in heavy-duty pickups like the Sierra 2500HD with the Duramax diesel depends on several configuration and use factors. Understanding these helps explain why mileage can vary from one truck to another.

• Drivetrain: two-wheel drive (2WD) generally delivers better mpg than four-wheel drive (4WD).


• Cab and bed configuration: crew cab versus regular/cab-and-a-file combinations affect weight and aerodynamics, influencing efficiency.


• Axle ratio and gearing: different gears impact highway efficiency and towing performance.


• Tire type and load: aggressive or off-road tires increase rolling resistance and reduce mpg.


• Towing and payload: towing heavy loads and carrying substantial payload substantially lowers mpg compared with unloaded highway driving.


• Driving conditions: city stop-and-go, highway cruising at steady speeds, terrain, and speed all affect real-world mileage.

In practice, buyers should expect a broad range of mpg depending on how the Sierra is equipped and used, with the factors above typically driving the most noticeable differences.

EPA estimates and typical ranges by configuration

EPA ratings for the Duramax-powered Sierra 2500HD are published for specific configurations on the window sticker. While exact numbers vary by setup, common ranges observed across popular builds are:

• 2WD, Crew Cab, Standard Bed: roughly 13–15 mpg combined.


• 4WD, Crew Cab, Standard Bed: roughly 11–14 mpg combined.


• 4WD, Crew Cab, Long Bed: roughly 11–13 mpg combined.

These figures can vary due to model-year updates, optional equipment, tire choices, and individual driving habits. For the exact number on a particular vehicle, consult the official EPA window sticker for that specific configuration.

Real-world fuel economy and tips to improve mpg

In real-world driving, fuel economy tends to be lower when towing or traversing hilly terrain, and higher when cruising unloaded on highways. Here are practical tips to maximize efficiency without sacrificing safety or capability:

• Keep tires properly inflated to the recommended pressure to reduce rolling resistance.


• Perform regular maintenance (air filters, fluids, and exhaust components) to maintain engine efficiency.


• Plan trips to minimize unnecessary idling and optimize highway speeds around 60–65 mph where legal and safe.


• Lighten payload when towing isn’t necessary and use towing aids to reduce drag and improve stability.

With attentive driving and proper maintenance, you can approach the higher end of the expected range, though towing and heavy payloads will always pull mpg lower than unloaded highway driving.

Summary

The 2022 GMC Sierra 2500HD with the Duramax diesel delivers respectable highway efficiency for its class, but fuel economy varies widely based on drivetrain, cab/bed configuration, and how the truck is used. A practical range for most common builds falls around 11–15 mpg combined, with city driving typically lower and highway driving higher. Always check the exact EPA rating on the window sticker for the specific configuration you’re considering.

How many MPG does a 6.6 Duramax diesel get?

One owner of a third-generation 2006 LBZ – the very engine that gave the 6.6 Duramax an edge over competing diesel powerplants – noted that when unloaded, their diesel engine gets between 17 and 18 mpg of fuel economy. But when towing, those numbers drop to around 10 to 12 mpg, depending on weight and road conditions.

How many miles per gallon does a Duramax 2500 get?

A Duramax 2500 generally gets around 17-18 mpg on the highway and 13-14 mpg in the city, though real-world mileage can vary significantly based on driving conditions. Under ideal, unloaded highway conditions, some drivers have reported achieving up to 20 mpg or more, especially with newer models, while towing can lower the average to around 11-13 mpg. 
This video demonstrates a real-world fuel economy test of a 2024 Chevrolet Silverado 2500 Duramax: 57sDaily MotorYouTube · Jun 27, 2023
Estimated MPG by driving condition

• Highway: 17-18 mpg, with some drivers reporting higher figures up to 20+ mpg in specific tests. 
• City: 13-14 mpg. 
• Towing: Around 11-13 mpg, depending on the weight of the load. 

You can watch this video to see a fuel economy test of a 2024 Chevy Silverado HD Duramax: 1:00Truck KingYouTube · Aug 15, 2023
Factors that affect MPG

• Towing: Hauling a trailer will significantly decrease your fuel economy. For example, towing a camper can lower the average to 11-13 mpg. 
• Driving habits: Aggressive acceleration, high speeds, and prolonged idling will reduce your MPG. Maintaining a steady speed and avoiding excessive idling can improve efficiency. 
• Model year: Newer models with updated engine and transmission designs often show slight improvements in fuel efficiency. 
• Maintenance: Proper maintenance, including regular servicing and keeping tire pressure correct, helps ensure optimal fuel economy. 

How do you get 30 MPG on a Duramax?

General Tips for Better MPG

1. Don't let your truck idle for long periods of time if you can help it. Idling burns a lot of fuel and your gas mileage will take a hit.
2. Don't be heavy on the gas.
3. Watch your tire pressure.
4. Service and maintain your Duramax truck regularly.

How many miles per gallon does a 2022 GMC Sierra diesel get?

2022 GMC Sierra 1500 Gas Mileage & Engine Specs
2.7L 4-cylinder: 19 mpg city and 22 mpg highway. 3.0L Duramax Turbo Diesel: 23 mpg city and 30 mpg highway.