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How big is the fuel tank on a Lexus GS 450h?

The fuel tank capacity of the Lexus GS 450h, a luxury hybrid sedan, is 17.2 gallons or 65 liters. This fuel tank size provides the GS 450h with a respectable driving range on a single tank of gas, allowing owners to go longer between fill-ups.


Detailed Fuel Tank Specifications


The Lexus GS 450h is powered by a 3.5-liter V6 engine combined with an electric motor, which together produce a total system output of 338 horsepower. To fuel this hybrid powertrain, the GS 450h is equipped with a 17.2-gallon (65-liter) fuel tank.


This fuel tank capacity is on the larger side for a midsize luxury sedan, providing the GS 450h with a driving range of around 500 miles on a single tank of gas in real-world conditions. The exact driving range will vary depending on factors such as driving style, road conditions, and the balance between gas and electric power usage.


Fuel Efficiency and Driving Range


The Lexus GS 450h is rated by the EPA to achieve 29 mpg in the city, 34 mpg on the highway, and 31 mpg combined. With its 17.2-gallon fuel tank, this translates to an estimated driving range of around 500 miles on a full tank of gas.


In comparison, the non-hybrid Lexus GS 350 model has a slightly smaller 17.0-gallon fuel tank but lower fuel efficiency ratings, resulting in a shorter driving range per tank. The hybrid GS 450h's combination of a larger fuel tank and better fuel economy gives it a significant advantage in terms of overall driving range.


Refueling the Lexus GS 450h



  • The fuel tank filler is located on the driver's side of the vehicle.

  • Lexus recommends using premium unleaded gasoline with a minimum octane rating of 91 for optimal performance and fuel efficiency.

  • The fuel tank can be filled up to its 17.2-gallon capacity, though the exact amount may vary slightly depending on factors such as the angle of the vehicle and the fuel pump nozzle.

  • When refueling, be sure to follow all safety precautions and local regulations regarding the handling of gasoline.


In summary, the Lexus GS 450h is equipped with a 17.2-gallon fuel tank, providing it with a driving range of around 500 miles on a single tank of premium unleaded gasoline. This larger fuel tank capacity, combined with the hybrid powertrain's efficient fuel economy, gives the GS 450h an advantage in terms of overall driving range and convenience for owners.

How many miles per gallon does a 2013 Lexus GS 450h hybrid get?


31 MPG



What is the price to replace a Lexus hybrid battery?


$2,000 to $8,000
In fact, hybrid battery replacement costs can vary anywhere from $2,000 to $8,000.



How many miles per gallon does a 2015 Lexus GS 450h get?


31 mpg combined
Performance & mpg
The EPA estimates that the GS 450h will achieve 31 mpg combined (29 city/34 highway), which we confirmed under real-world driving conditions.



What is real mpg for Lexus RX450h?


Based on data from 19 vehicles, 1,497 fuel-ups and 504,671 miles of driving, the 2021 Lexus RX450h gets a combined Avg MPG of 28.48 with a 0.26 MPG margin of error.



How many miles per gallon does a 450h get?


The 2024 Lexus RX 450h+ is the first plug-in hybrid (PHEV) in the lineup. It earns a remarkable 83 miles per gallon-equivalent (mpg-e). Ensuring a terrific value, as Lexus always does, the RX PHEV comes in the Luxury grade.



How long does a Lexus GS 450h hybrid battery last?


Under average driving conditions, you'll need a hybrid car battery replacement roughly once every 150,000 miles or 15 years, whichever comes first.



How long does Lexus hybrid engine last?


Under normal conditions, you can expect Lexus hybrid car batteries to last up to 150,000 miles or 15 years and sometimes even longer.



How big is the gas tank on a Lexus gs450h?


Fuel & MPG

Range in miles (city/hwy)378.4/430.0 mi.
Fuel tank capacity17.2 gal.



How often do hybrid batteries go bad?


Hybrid Battery Lifespan: The Basics
Average Lifespan: Hybrid batteries typically have a lifespan of 100,000 to 200,000 miles. Warranty Coverage: Most hybrid car manufacturers offer warranties that cover the hybrid battery for up to 8 years or 100,000 miles.



Is the Lexus GS 450h fast?


The top speed of 119mph might leave you a bit embarrassed on the autobahn, too. The GS 450h counters with a far more convincing set of numbers. It has 354bhp from its combined 3.5-litre V6 and electric motor making for a far more respectable, quick even, 5.3-second run on the 0-62mph benchmark.


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.