How many miles per gallon does a 22 Chevy 2500 diesel get?
On average, the 2022 Chevrolet Silverado 2500HD with the 6.6-liter Duramax turbodiesel gets roughly 17 miles per gallon combined, with EPA estimates around 15 mpg in city driving and 20–21 mpg on the highway depending on configuration. Real-world mileage varies with payload, towing, and driving conditions.
Understanding the numbers for this heavy-duty pickup
The question of mpg for a heavy-duty diesel pickup depends on drivetrain, axle ratio, cab and bed configuration, and how you drive. The following sections explain typical EPA figures and what can move those numbers up or down.
Key factors that affect mpg
- Drivetrain: 2WD versus 4WD, with 4WD usually trimming highway efficiency slightly.
- Axle ratio: taller gears can improve highway mpg but may reduce towing performance.
- Towing and payload: heavy loads lower mpg significantly, especially on grades.
- Terrain and driving style: steady highway speeds yield the best results; city driving lowers mpg.
- Configuration: cab size and bed length have minor aerodynamic effects.
These factors help explain why real-world mileage often differs from EPA estimates, particularly when towing or carrying payloads.
EPA estimates by configuration
Below are typical EPA estimates for common Silverado 2500HD Duramax diesel configurations. Exact figures can vary by model year, axle choice, and other options—always check the window sticker for your specific build.
Two-wheel drive (2WD)
EPA estimates for the 2WD Duramax configuration are generally:
- City: 15 mpg
- Highway: 21 mpg
- Combined: 17 mpg
These figures assume a standard axle ratio and no heavy towing. Real-world numbers will vary with payload, grade, and wind.
Four-wheel drive (4WD)
EPA estimates for the 4WD Duramax configuration are typically:
- City: 15 mpg
- Highway: 20 mpg
- Combined: 17 mpg
With 4WD and towing or heavier payloads, expect slightly lower mileage, especially on hilly routes or when pulling a trailer.
Real-world mileage tips
Fuel economy for the Silverado 2500HD is most affected by towing, payload, and driving style. Here are practical tips to maximize efficiency without sacrificing capability.
- Lighten loads when not towing; remove unnecessary cargo from the bed.
- Avoid excessive idling, and use a block heater if needed in cold climates.
- Maintain proper tire pressure per GM recommendations to reduce rolling resistance.
- Plan routes to minimize hills and stop-and-go traffic when possible.
- Use cruise control on highways to maintain steady speeds.
Remember that real-world results can vary significantly from EPA estimates, especially under heavy load or in challenging terrain.
Summary
For the 2022 Chevrolet Silverado 2500HD with the 6.6-liter Duramax diesel, expect around 17 miles per gallon in mixed driving, with EPA estimates near 15 mpg city and 20–21 mpg highway depending on whether the truck is 2WD or 4WD. Towing, payload, and terrain typically pull these numbers down, particularly under heavy load. For precise figures, consult the exact window sticker or fueleconomy.gov for your specific build.
