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How many miles per tank does a Lexus RX400h get?

Typically about 450–500 miles per tank in mixed driving.


To estimate more precisely, consider the RX 400h’s fuel tank capacity (roughly 17.2 gallons) and its EPA-rated efficiency (roughly 26–28 miles per gallon combined), which together yield a practical range in the 450–500 mile range. Real-world mileage varies with year, driving style, terrain, and maintenance.


What determines the range


Several factors influence how far you can go on a full tank. The following elements play a major role in real-world mileage.



  • Fuel tank capacity: about 17.2 gallons for the RX 400h (US gallons).

  • EPA fuel economy: typically in the mid-20s to high-20s MPG combined, depending on year and drive mode.

  • Driving conditions: city versus highway can significantly affect MPG.

  • Terrain and load: hills, cargo, and roof racks impact efficiency.

  • Vehicle maintenance: tire pressure, battery condition, and overall tune can alter real-world mileage.


In practice, the range you experience will vary, but you can expect roughly 450–500 miles per tank under mixed driving conditions.


How to estimate your own range


Use a simple calculation: miles per tank ≈ tank capacity (gallons) × miles per gallon (MPG). For the RX 400h, with a ~17.2-gallon tank and typical mixed driving MPG in the mid-20s to high-20s, a practical range is around 450–500 miles per fill. For example, 17.2 gallons × 28 MPG ≈ 481 miles.


Summary


The Lexus RX 400h generally yields about 26–28 MPG combined with a 17.2-gallon tank, translating to an approximate 450–500 miles per tank in typical mixed driving. Real-world results depend on year, driving style, and conditions; use the calculation above to tailor expectations for your specific vehicle.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.