Loading

Does the Lexus RX 450h hybrid require premium gas?

Yes, the Lexus RX 450h hybrid vehicle requires premium gasoline. This high-end luxury hybrid SUV is designed to run on 91 octane or higher fuel for optimal performance and efficiency.


Lexus RX 450h Hybrid Fuel Requirements


The Lexus RX 450h is a mid-size luxury hybrid SUV that combines a gasoline engine with an electric motor. According to the manufacturer, this vehicle requires the use of premium unleaded gasoline with a minimum octane rating of 91. Using regular 87 octane fuel is not recommended, as it could lead to reduced power, fuel economy, and engine performance.


The reason the Lexus RX 450h requires premium gas is due to its advanced hybrid powertrain. The high-compression engine and turbocharging technology used in this model are designed to work optimally with higher-octane fuel. Premium gas helps prevent knocking and engine damage, ensuring the vehicle runs smoothly and efficiently.


Fuel Economy and Performance


The Lexus RX 450h is rated by the EPA to achieve up to 31 mpg in the city and 28 mpg on the highway when using premium fuel. This fuel efficiency is a key selling point of the hybrid model, as it offers significantly better mileage than the non-hybrid Lexus RX variants.


In terms of performance, the RX 450h delivers a combined 308 horsepower from its 3.5-liter V6 engine and electric motor. The premium fuel requirement helps the engine produce its maximum power and torque, providing a responsive and enjoyable driving experience.


Conclusion


In summary, the Lexus RX 450h hybrid SUV requires the use of premium 91 octane or higher gasoline for optimal performance, fuel efficiency, and engine health. While the premium fuel requirement may result in slightly higher fuel costs, it is a necessary specification for this advanced hybrid powertrain to function as designed.

What are the common faults on a Lexus RX 450h?


Suspension problems are also common in the Lexus RX450h, particularly in models that have high mileage. Some owners have reported leaks in the air suspension system, while others have reported that the compressor wears out quickly and needs to be replaced.



How long does Lexus RX 450h hybrid battery last?


2021 Lexus RX 450h batteries frequently last between 3-5 years, but this is variable depending on the type of battery, weather conditions, driving habits, and more. You can prolong the life of your RX 450h battery by: Keeping your vehicle stored indoors away from extreme swings in temperature or climate.



How long does a Lexus 450h hybrid battery last?


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



Which year Lexus RX 450h is the best?


The Best Model Years to Buy a Lexus RX 450h
The 2022 Lexus RX 450h is our top pick for the best model year value for the RX 450h. With the 2022, you would only pay, on average, 71% of the price as new, with 83% of the vehicle's useful life remaining.



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


2024 Lexus RX Hybrid MPG
Below, you'll find the Lexus RX Hybrid MPG estimates for each of the models: Lexus RX 350h AWD: 37 city / 34 highway / 36 combined* Lexus RX 500h AWD: 27 city / 28 highway / 27 combined* Lexus RX 450h+ AWD: 83 MPGe**



Can I use regular gas in my Lexus RX 450h?


While your Lexus RX uses regular (unleaded) gas with an octane rating of 87, your Lexus SUV can take premium fuel with an octane rating of 91. The use of premium gas may enhance your vehicle's performance, but the choice to use standard or premium gas is entirely up to you.



What happens if you put regular gas in a Lexus Hybrid?


Use of unleaded gasoline with an octane rating lower than what is listed for your model year vehicle could potentially result in engine knocking. If the octane rating used is less than required, damage to the engine may occur and which could void the vehicle warranty.



Which Lexus models do not require premium gas?


Lexus ES

  • 2022 Lexus ES 250 Fuel Requirement: Regular 87-octane unleaded.
  • 2022 Lexus ES 350 Fuel Requirement: Regular 87-octane unleaded.
  • 2022 Lexus ES 300h Fuel Requirement: Regular 87-octane unleaded.



What is the best year to buy a Lexus 450h?


The 2022 Lexus RX 450h is our top pick for the best model year value for the RX 450h. With the 2022, you would only pay, on average, 71% of the price as new, with 83% of the vehicle's useful life remaining.



Does the Lexus RX Hybrid need premium gas?


The Lexus RX's Gas Requirements
Most 2024 and 2023 models require premium unleaded gas with an octane rating of 91 or higher. Models released between 2012 and 2022 use unleaded gasoline with an octane rating of 87 or higher. That means that while you can use premium gasoline in older RX models, it isn't required.


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.