How big is the gas tank on a Lexus rx400h?
The RX 400h uses a gas tank of about 17.2 gallons (65 liters). This capacity is standard for most 2005–2009 models and provides a practical balance with the hybrid system. Below is what you need to know about the official size and how it translates to real-world driving.
Official tank capacity and context
According to Lexus specifications, the RX 400h typically features a 17.2 US-gallon (65-liter) fuel tank. This figure is largely consistent across model years and markets, with only minor variations caused by measurement rounding or regional production differences.
Before listing the exact figure, note that tank size is a fixed specification that affects range and refueling intervals. The following is the confirmed capacity commonly cited by manufacturers and service manuals.
- Fuel tank capacity: 17.2 US gallons (65 liters) for most 2005–2009 Lexus RX 400h models.
In practice, while the capacity remains essentially constant, the actual usable range can vary with driving conditions, climate, and how often the hybrid system engages its electric motors during a trip.
Practical implications for drivers
With a 17.2-gallon tank, owners can expect a substantial driving range under mixed driving conditions. The RX 400h’s hybrid powertrain aims to optimize efficiency, particularly at steady speeds and during gentle accelerations, which can extend the distance you can travel on a full tank compared to a non-hybrid SUV of similar size.
Refueling patterns will depend on your typical commute and highway usage. In urban driving, you may see more frequent but smaller refills as the hybrid system prioritizes electric propulsion, while highway driving can yield better overall fuel economy and longer intervals between fills.
Verification tips for your vehicle
If you want to confirm the exact capacity for a specific vehicle, check the owner’s manual, the fuel-filler door sticker, or service documentation for your model year and market. Minor regional variations can appear in documentation, but the standard capacity for most RX 400h units remains around 17.2 gallons.
Summary
The Lexus RX 400h is equipped with a roughly 17.2-gallon (65-liter) gas tank across its 2005–2009 model years. This consistent capacity supports the vehicle’s hybrid efficiency, with actual range varying by driving style and conditions. For the most precise figure, consult the vehicle’s manual or manufacturer documentation specific to your region.
How many miles per gallon does a Lexus RX 400h get?
31 miles per gallon city/27 highway
EPA fuel economy: 31 miles per gallon city/27 highway.
How big is the gas tank on a RX 400h?
17.2 gal
Fuel & MPG
464.4/430.0 mi. 17.2 gal.
How many miles can a 2008 RX 400h last?
With normal use and maintenance, its battery typically lasts over 10 years or over 200,000 miles! This means you can enjoy the environmental and energy-saving benefits of a hybrid for a long time without having to worry about frequent battery replacements.
What is the most common problem with the Lexus RX 400h?
Top 10 Common Problems in Lexus RX 400h and How to Fix Them
- Brake Actuator Malfunction.
- Cooling System Issues.
- Transmission (CVT) Problems.
- Faulty Oxygen Sensors.
- 12V Auxiliary Battery Problems.
- Dashboard Melting (Cosmetic Issue)
- Water Leaks in Rear Hatch or Sunroof.
- Suspension Wear and Noises.
