How big is the gas tank on a Dodge Ram ProMaster?
The fuel tank on most Ram ProMaster cargo vans is 24 gallons (about 90.8 liters).
This article explains the standard tank size across common ProMaster configurations, notes any variations by year or trim, and what the capacity means for range and fueling.
Standard tank size across ProMaster models
Here are the figures you’re most likely to encounter on typical ProMaster 1500, 2500, and 3500 cargo vans with both gasoline and diesel powertrains.
- 24 gallons (approximately 90.8 liters) is the common fuel-tank capacity for the vast majority of Ram ProMaster cargo vans in recent model years and trims.
Note: In rare cases—such as certain chassis cab configurations or older specifications—the capacity can differ by a small amount. Always check the vehicle’s VIN sticker or the owner’s manual for the exact figure for your van.
What this means for range and fueling
With a 24-gallon tank, the ProMaster’s practical driving range depends on engine choice, payload, and driving conditions. Gasoline and diesel variants share the same basic tank size, but fuel economy varies with engine tuning, weight, and aerodynamics.
Model-year and variant notes
Ram has offered ProMaster vans in gasoline and diesel options across multiple years and trims. In general, the 24-gallon tank has remained the standard across the common cargo van lineup (1500/2500/3500). If you’re evaluating a specific vehicle, verify the exact capacity on the vehicle’s label or in the official documentation for that individual unit.
Summary
The standard gas tank on the Ram ProMaster cargo van is 24 gallons (approximately 90.8 liters) across most common configurations. For precise specifications, especially on non-standard or older builds, consult the vehicle’s documentation or the dealer to confirm the exact capacity.
