How big is the gas tank on a RX400h?
The gas tank on a Lexus RX 400h is about 17.2 gallons (65 liters).
This article breaks down the standard capacity, notes regional variations, and explains what the tank size means for driving range and refueling planning.
Official capacity and regional variations
Before listing the figures, it’s important to note that small differences can occur by market and year. The RX 400h is widely documented with a baseline tank size of 65 liters (approximately 17.2 US gallons).
- Standard capacity: 65 liters (17.2 US gallons) for most 2006–2008 RX 400h models in major markets.
- Regional rounding: some listings round to 17.0–17.3 gallons or 64–65 liters depending on measurement conventions.
- Manufacturing tolerance: real-world tank capacity can vary slightly from vehicle to vehicle due to production tolerances.
For the most precise figure, check the owner’s manual or the sticker in the fuel filler door of your specific vehicle.
What this means for range and refueling
With a full tank, the driving range depends on fuel economy, driving conditions, and the hybrid system’s operation. In practice, RX 400h owners report that a full tank covers several hundred miles, but actual range will vary with city versus highway driving and use of the hybrid mode.
Practical takeaways for owners and shoppers
When planning trips or budgeting for fuel, use the baseline capacity of 65 liters (17.2 gallons) as a starting point, then adjust for your vehicle’s observed fuel economy and typical trip conditions. If you’re shopping used, verify the exact capacity for the specific car by consulting the manual or the manufacturer’s data for that year and market.
Summary
The RX 400h generally uses a 65-liter (17.2-gallon) fuel tank, with minor variations by market and year. This baseline capacity helps drivers estimate range and refueling needs, though actual range will depend on driving style, conditions, and the hybrid system’s operation. Always confirm the exact specification in your vehicle’s documentation for the most accurate planning.
