How big is the gas tank on a Ram ProMaster?
The gasoline-powered Ram ProMaster typically uses a 24-gallon fuel tank (about 90 liters).
Across the ProMaster lineup—including 1500, 2500, and 3500 models with different wheelbases and roof heights—the standard gasoline engine configuration generally shares a 24-gallon tank. However, exact capacity can vary by year, trim, or regional spec, so it's wise to verify for your specific build.
What you should know about tank size
The 24-gallon tank is the common baseline for most gas-powered ProMaster vans, providing a practical balance between cargo space and range. This size translates to roughly 90 liters and is designed to accommodate long highway runs and frequent stops in urban operation.
How to think about range and fuel use
Actual driving range depends on factors such as engine choice, load, driving conditions, and maintenance. With a 24-gallon tank, drivers typically estimate range using their vehicle’s fuel economy figures and planned routes, recognizing that real-world results can vary.
Tank size by powertrain and model year
Most gasoline ProMaster configurations share the same 24-gallon tank, but there can be minor deviations by year, region, or specific trim packages. When in doubt, confirm with official documentation for your exact VIN and build date.
How to verify your van’s exact capacity
To be certain about your particular van’s fuel-tank size, check these sources:
- Owner's manual for your model year and configuration
- VIN-specific specification sheets from Ram/Chrysler
- Vehicle placard or fuel-filler door label on the van
- Your RAM dealer or official service center
In practice, most gasoline ProMasters use a 24-gallon tank, but always verify for your exact van to avoid discrepancies in range planning.
Diesel vs. gasoline: does the tank size differ?
The ProMaster family also offers a diesel option, and while small differences can exist between model years or regional specifications, the gas-powered and diesel-powered variants commonly share a similar overall fuel-tank size. Always reference the specific vehicle’s documentation or VIN for confirmation.
Summary
The standard fuel tank for a gasoline Ram ProMaster is 24 gallons (about 90 liters), a figure that applies to most 1500, 2500, and 3500 configurations. If you’re planning trips or budgeting fuel stops, use this as a baseline, but verify your exact tank capacity against your van’s VIN, year, and trim to account for any variations.
What are common problems with the ProMaster 2500?
The most reported issues include:
- Electrical system malfunctions.
- Transmission hesitation.
- Interior build quality problems.
- Rearview camera glitches.
How many gallons of gas does a Ram ProMaster hold?
The standard fuel tank capacity for a Ram ProMaster is 24.0 gallons. This capacity is consistent across different model years, including the 2019, 2021, and 2025 models, and applies to various configurations like the Cargo Van and Cutaway Truck.
- Capacity: 24.0 gallons
- Fuel type: Regular unleaded
- Note: This applies to the standard Ram ProMaster van. Some larger camper van conversions may have different or additional fuel tanks.
How big is the gas tank on a Ram ProMaster 2500?
The fuel tank capacity for a Ram ProMaster 2500 is 24.0 gallons. This applies to both newer and older models of the ProMaster cargo van.
- Fuel tank capacity: 24.0 gallons
- Fuel type: Regular unleaded gasoline
- Note: The ProMaster 2500 is a different vehicle from the Ram 2500 heavy-duty truck, which has a significantly larger fuel tank (e.g., 31.0 or 32.0 gallons, depending on the model year).
How many miles per gallon does a Ram ProMaster 1500 get?
The Ram ProMaster 1500 gets an EPA-estimated 20 mpg city / 25 mpg highway, though real-world mileage is often lower, ranging from 14-17 mpg depending on factors like load, terrain, and driving speed. The actual MPG varies, with some users reporting highway mileage in the low 20s, especially when driving empty, and lower numbers when carrying heavy loads.
This video discusses real-world fuel economy and other aspects of the Ram ProMaster: 56sThe Van TeacherYouTube · Aug 19, 2025
EPA estimated
- City: 20 mpg
- Highway: 25 mpg
Real-world / typical usage
- Typical average: Around 14-17 mpg, depending on conditions
- With heavy loads: Mileage can be lower than the typical average
- Highway cruising: Can be higher, with some drivers reporting around 22 mpg when driving at consistent, moderate speeds with a moderate load
