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What kind of gas does a 2024 Lexus GX 550 take?

The 2024 Lexus GX 550 requires premium unleaded gasoline, typically 91 octane or higher. This high-performance luxury SUV is designed to run on premium fuel to optimize its engine performance and fuel efficiency.


Detailed Explanation


The Lexus GX 550 is a full-size luxury SUV that features a powerful 5.7-liter V8 engine. This engine is engineered to deliver exceptional power and acceleration, but it also requires a higher-octane fuel to operate at its best. Premium unleaded gasoline, with an octane rating of 91 or higher, is the recommended fuel for the 2024 Lexus GX 550.


Using a lower-octane fuel, such as regular gasoline, can potentially cause engine knocking or pinging, which can lead to decreased performance and fuel efficiency. Premium fuel also helps to keep the engine's fuel injectors and other components clean, further enhancing the vehicle's performance and longevity.


Fuel Economy and Considerations


The 2024 Lexus GX 550 is rated to achieve an estimated 15 miles per gallon in the city and 19 miles per gallon on the highway when using premium unleaded gasoline. While the use of premium fuel may result in slightly higher fuel costs, the benefits of improved engine performance, fuel efficiency, and long-term engine health make it a worthwhile investment for Lexus GX 550 owners.


It's important to note that using a lower-octane fuel than recommended by the manufacturer can void the vehicle's warranty, so it's crucial to always fill the Lexus GX 550 with premium unleaded gasoline to ensure optimal performance and maintain the vehicle's warranty coverage.

What kind of gas does a Lexus GX 550 take?


The Lexus GX 550 requires premium unleaded gasoline, specifically 91 octane. Using premium fuel is recommended for this vehicle's engine, as it is designed for this octane rating to perform optimally and avoid knocking or pinging. 

  • Required fuel: The GX 550 requires premium unleaded 91-octane gasoline. 
  • Why it's needed: Premium fuel is necessary for the vehicle's engine performance, as outlined in the owner's manual. 
  • What happens if you use lower octane: Using a lower grade fuel may lead to reduced performance and fuel economy. 
  • Recommendation: It is best to follow the manufacturer's recommendation and use premium fuel to ensure the longevity and performance of your GX 550. 



What kind of gas does a Lexus GX 2025 take?


The 2025 Lexus GX requires premium, 91-octane or higher, unleaded gasoline. Using a lower-octane fuel can lead to decreased performance and, with repeated use, may cause engine knock and potentially long-term damage. 
Why premium is required

  • Engine design: The GX's twin-turbo V6 engine is engineered to run on premium fuel for optimal performance. 
  • Performance: Premium fuel provides higher resistance to knocking, allowing the engine to perform at its best. 
  • Warranty: Using the required premium fuel is important to maintain the vehicle's warranty. 

What to do if premium fuel is unavailable
  • Find a station with premium: In most cases, you can simply find a different gas station that offers 91-octane or higher gasoline. 
  • Check your manual: Your owner's manual will confirm the exact fuel requirement for your vehicle. 



Can I use 87 gas for Lexus?


The short answer—most do, but not all. Lexus is known for its high-performance engines, and many models are designed to run on 91-octane premium fuel for optimal efficiency and longevity. However, a few models in the lineup can safely run on 87-octane regular unleaded gas without compromising performance.



What kind of gas does a 2024 Lexus take?


premium unleaded gas
Whether your Lexus RX needs premium gas depends on its age. 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.


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.