How many miles per gallon does a 2010 Chevy Silverado 2500 Duramax get?
In general, the 2010 Silverado 2500HD with the Duramax 6.6L turbo-diesel delivers about 17 miles per gallon combined, with EPA estimates around 15 mpg in the city and up to 21 mpg on the highway for two-wheel-drive versions, and slightly lower figures for four-wheel-drive models. Real-world mileage varies widely based on payload, towing, and driving style.
Understanding the factors that affect fuel economy
Fuel economy for a heavy-duty diesel pickup like the Duramax-powered Silverado depends on drivetrain, payload, towing, terrain, and driving habits. Diesel engines generally offer better highway efficiency than gasoline engines, but weight, drivetrain, and towing loads can significantly alter actual miles per gallon. This article summarizes official estimates and what owners typically experience on the road.
EPA ratings by drivetrain
Below is a concise breakdown of typical EPA estimates for common configurations. Note that exact numbers can vary by cab/bed setup and tire size.
- 2WD (Duramax 6.6L, automatic transmission): about 15 mpg city / 21 mpg highway; combined around 17 mpg.
- 4WD (Duramax 6.6L, automatic transmission): about 15 mpg city / 20 mpg highway; combined around 17 mpg.
These figures reflect standard testing conditions and can vary with equipment, tires, and maintenance. Real-world numbers may be lower, especially when towing or carrying heavy loads.
Real-world mileage considerations
In day-to-day use, drivers report lower mileage when towing, hauling heavy cargo, or navigating hilly terrain. Highway cruising with little weight often yields the best numbers, but payload and trailer tongue weight can still reduce efficiency. Expect a broad range, typically from the low teens to the mid-teens in city driving and the upper teens to low 20s on long highway trips without a trailer.
Tips to maximize fuel economy
- Keep tires inflated to the recommended pressure and perform regular rotations/alignment checks.
- Follow the manufacturer’s maintenance schedule; use quality fuel and engine oil appropriate for diesel engines.
- Avoid excessive idling and use cruise control on highways when safe.
- Minimize heavy payload and aerodynamic drag where possible (e.g., remove roof racks if not in use).
- Plan routes to reduce unnecessary stops and keep the engine at efficient operating temperatures.
Implementing these practices can help approach the EPA estimates and improve real-world mpg, especially on long highway trips.
Summary
The 2010 Duramax-equipped Silverado 2500HD typically sits in the mid-teen mpg range, with about 17 mpg combined as a baseline. Two-wheel-drive versions usually deliver a bit better highway efficiency than four-wheel-drive models, while towing and payload can significantly reduce fuel economy. For precise numbers tailored to your exact cab/bed configuration and options, consult FuelEconomy.gov or the EPA ratings for that specific build.
