How many gallons of gas does a ProMaster hold?
The Ram ProMaster full-size cargo van typically carries a 24-gallon fuel tank (about 90 liters), regardless of whether it uses the gasoline 3.6L V6 or the available 3.0L EcoDiesel engine. Exact capacity is usually consistent but can vary slightly by model year or edition. Here’s a concise guide to what you can expect across common configurations.
Typical fuel capacity across ProMaster configurations
Gasoline and diesel configurations
The figures below reflect the standard tank size for the common U.S. market full-size ProMaster vans. Both gasoline and diesel versions generally share the same nominal capacity, though exact numbers can vary by year or special edition. Use this as a baseline when planning fuel stops or range.
- Gasoline-powered ProMaster with the 3.6L V6 engine: 24 gallons (approximately 90 liters).
- Diesel-powered ProMaster with the 3.0L EcoDiesel engine: 24 gallons (approximately 90 liters).
Note: The ProMaster City and other smaller variants have smaller tanks; the figures above apply specifically to the full-size ProMaster lineup.
Understanding range and fuel planning
Tank size is only part of the story. Range depends on fuel efficiency, which varies with payload, terrain, and driving style. A standard 24-gallon tank can yield a wide range of miles depending on mpg figures for your engine and configuration. To estimate range, multiply the tank capacity by the vehicle’s average mpg.
- Confirm your van’s exact tank capacity from the door label or owner's manual (most full-size ProMasters list 24 gallons).
- Find the EPA-estimated fuel economy for your engine and configuration (mpg figures vary by year, drive type, and payload).
- Calculate range: 24 gallons × mpg ≈ expected miles per fill.
For real-world planning, consider carrying a buffer for areas with sparse fuel stations or heavy payload.
Summary
In short, a Ram ProMaster full-size van typically holds about 24 gallons of fuel, whether equipped with the gasoline 3.6L V6 or the 3.0L EcoDiesel. Always verify the exact capacity for your specific vehicle year and trim, and use mpg data to estimate your driving range accurately.
