How many miles per gallon does a Chevy 3500 diesel get?
A Silverado 3500HD with the Duramax diesel typically averages about 17–19 miles per gallon combined in mixed driving, with real-world results often dipping into the mid-teens when towing or carrying heavy payloads. The exact figure depends on configuration and usage.
Because the 3500HD comes in multiple drivetrain and cab/bed configurations, fuel economy varies. The Duramax engine generally shines on highway cruising and light loads, but towing or heavy payloads can reduce efficiency. The following sections outline typical EPA estimates by configuration and the main factors that affect real-world mpg.
EPA mpg by configuration
The ranges below reflect common EPA combined estimates for Duramax-powered Silverado 3500HD models. Real-world results can vary with equipment and conditions.
- 2WD SRW (single rear wheel): approximately 17–19 mpg combined
- 4WD SRW: approximately 16–18 mpg combined
- 2WD DRW (dual rear wheels): approximately 15–17 mpg combined
- 4WD DRW: approximately 14–16 mpg combined
In everyday use, most drivers will see about 16–18 mpg combined on typical mixed driving, with higher numbers on light highway cruising and lower numbers when towing or carrying a heavy payload.
What affects MPG in real life
The following factors influence real-world fuel economy for the Silverado 3500HD with a Duramax diesel. Understanding them helps set expectations for a specific build and usage pattern.
- Weight and towing: Heavier loads and trailers increase engine work and reduce mpg.
- Driving style: Quick accelerations, high speeds, and aggressive driving lower efficiency.
- Terrain and altitude: Hills, mountains, and higher altitudes reduce mpg versus flat, low-altitude driving.
- Tire type and pressure: Underinflated tires or aggressive tread patterns raise rolling resistance and lower mpg.
- Maintenance and condition: Regular servicing, clean air filters, and proper oil quality impact efficiency.
- Payload and aerodynamics: Larger cabs/beds and roof racks add drag and weight, reducing mpg.
Tips to maximize efficiency include keeping tires inflated to recommended pressure, minimizing excess cargo, and maintaining smooth, steady driving, especially on highways.
Summary
The Duramax-powered Silverado 3500HD typically delivers a combined mpg in the mid-teens to upper-teens range, about 16–18 mpg in everyday mixed driving, with lower figures when towing and higher numbers on light highway-only use. Exact numbers depend on drivetrain (2WD vs 4WD) and wheel/axle configuration (SRW vs DRW) as well as payload and driving conditions. For the most precise figure for a specific build, consult the EPA fuel economy label for that configuration or Chevrolet’s official specifications.
Note: Figures reflect model years up to 2024–2025 and may change with new updates or trims. Always verify the latest official figures for your exact configuration.
