How big is the gas tank on a Toyota Avalon?
The gas tank on most Toyota Avalon models is 18.5 gallons (70 liters).
This article provides a closer look at the tank size across generations, how it affects driving range, and how to verify the exact capacity for your specific Avalon.
Tank size overview
Commonly cited capacity for the Avalon across recent generations is 18.5 gallons. This refers to the total tank volume, not the amount you can routinely use before refueling. For your exact vehicle, check the door jamb placard or the owner's manual, since there can be slight variations by trim or market.
Before listing the specifics, here is the typical capacity across Avalons:
- Most modern Avalon models (both non-hybrid and hybrid variants) list a fuel tank capacity of 18.5 gallons (70 liters).
- Some older generations or regional variants may show the same nominal capacity, with minor differences depending on market.
- Always verify the exact figure for your specific vehicle on the door jamb placard or in the owner's manual.
With an 18.5-gallon tank, driving range depends on powertrain and driving conditions. In practice, you can expect a range that typically falls in the broad band of roughly 500–700 miles per tank, with hybrids often achieving a higher range due to efficiency.
Variant considerations
The 18.5-gallon figure is standard for many Avalons, but there can be slight variations by year, trim, or market. If you are evaluating a particular model, confirm the capacity listed in the official documentation for that exact vehicle.
How capacity translates to range
The tank size is just one part of the equation. The Avalon’s range per tank depends on the powertrain and driving conditions. A V6-equipped model with typical highway driving may approach 500–600 miles per tank, while an Avalon Hybrid can push closer to 650–750 miles under favorable highway conditions.
How to verify your exact capacity
To be sure of your vehicle’s fuel-tank capacity, use these steps:
- Check the driver’s door jamb placard, which lists the official fuel-tank capacity for your car.
- Consult the owner’s manual or the official Toyota specifications for your model year.
- Look up the exact vehicle by VIN on Toyota’s site or a trusted dealer portal.
- Ask a Toyota dealer or service department for the precise figure if you’re unsure.
Verifying the capacity is straightforward and helps you understand your car’s total fuel volume, range, and refueling needs more accurately.
Summary
Across most Toyota Avalon models, the gas tank capacity is listed as 18.5 gallons (70 liters). While this figure is widely cited for modern Avalons, always confirm with your vehicle’s door jamb placard or owner’s manual for the exact specification, especially if you’re looking at a specific year, trim, or regional variant. Knowing the tank size helps you estimate range and plan refueling stops with greater confidence.
