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Which Lexus does not require premium gas?

The Lexus UX is the only Lexus model that does not require premium gasoline. All other Lexus vehicles, including the ES, IS, NX, RX, and LX, are designed to run on premium fuel for optimal performance and efficiency.


Understanding Lexus Fuel Requirements


Lexus is a luxury vehicle brand owned by Toyota, known for its high-end, well-engineered automobiles. Typically, Lexus models are engineered to run on premium gasoline, which has a higher octane rating than regular unleaded fuel. The higher octane helps prevent engine knocking and allows the engine to operate at higher compression ratios, resulting in improved power, fuel efficiency, and overall performance.


However, the Lexus UX, the brand's smallest and most affordable crossover SUV, is an exception to this rule. The UX is designed to run on regular 87-octane gasoline, making it more accessible and cost-effective for some drivers.


Why the Lexus UX Doesn't Require Premium Fuel


The Lexus UX is powered by a 2.0-liter four-cylinder engine that is tuned to operate efficiently on regular unleaded gasoline. This engine design, along with the UX's smaller size and lower power output compared to other Lexus models, allows the vehicle to perform well without the need for premium fuel.


By offering the UX with a regular fuel requirement, Lexus is able to appeal to a wider range of consumers who may be more price-conscious when it comes to fuel costs. This can be particularly beneficial for urban dwellers, commuters, or those who don't require the high-performance capabilities of other Lexus models.


Considerations for Lexus Owners


While the Lexus UX is the only model that can run on regular gasoline, it's important to note that using premium fuel in any Lexus vehicle, including the UX, can still provide some benefits:



  • Improved engine performance: Premium fuel can help the engine operate more efficiently, potentially resulting in slightly better acceleration and power delivery.

  • Enhanced fuel economy: In some cases, using premium fuel can lead to a small increase in fuel efficiency, though the difference may be negligible.

  • Reduced engine wear: The higher octane rating of premium fuel can help protect the engine from knocking and other issues, potentially extending the engine's lifespan.


Ultimately, the decision to use premium or regular fuel in a Lexus UX comes down to the individual driver's priorities and preferences. While the UX is designed to run on regular gasoline, using premium fuel may provide some additional benefits for those who are willing to pay the higher price at the pump.

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


WHAT HAPPENS IF I PUT REGULAR GAS IN A VEHICLE THAT REQUIRES PREMIUM GAS? Using lower octane fuel in a vehicle that requires premium gas could cause internal damage, especially within a luxury vehicle like the Lexus NX. Some issues you may start experiencing include: Reduction in fuel economy.



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


However, if you use gas with a lower octane rating, it could lead to diminished performance and engine knocking noises. Be sure you're treating your RX well!



Does the 2025 Lexus RX 350 require premium gas?


According to Lexus standards, you need to use unleaded gas with an octane rating of 87 or higher. That means the RX doesn't require premium gasoline, as the premium octane rating is 91.



Which Lexus is the most reliable?


Top 10 Most Dependable Lexus Models

  • Lexus LX 470.
  • Lexus LS 400.
  • Lexus IS 300.
  • Lexus LC 500.
  • Lexus LS.
  • Lexus IS.
  • Lexus ES.
  • Lexus GX. Like its larger counterpart, the Lexus LX, the Lexus GX was designed by starting with a strong, reliable base and adding luxury features like knee airbags and Adaptive Variable Suspension.



What happens if you accidentally put 87 instead of 91 in a Lexus?


If you put lower-octane fuel into your high-octane vehicle, whether by mistake or to save money on gas, you'll probably notice the effects right away: things like poor fuel economy, reduced acceleration, and spark knock, which sounds like a high-pitched pinging or rattling noise.



Does the 2024 Lexus ES350 require premium gas?


The owner manual suggests Regular gas is sufficient for new ES350.



Does the 2024 Lexus NX require premium gas?


Yes, the Lexus NX requires premium gas.
Premium gas is unleaded gasoline with an octane rating of 91 or higher. If you use fuel with an octane rating of less than 91, it can damage your engine.



Which Lexus can use regular gas?


Model YearModel(s)Recommended Minimum Octane Rating
2022NX 350h91 (recommended) or 87 (minimum)
2021GX 460, IS 300, IS 350, LC 500, LC 500C, LC 500h, LS 500, LS 500h, LX 570, NX 300, RC 300, RC 350, RC F, RX 450h91
ES 250, ES 300h, ES 350, NX 300h, RX 350, UX 200, UX 250h87



Does the Lexus LX 570 require premium gas?


The manufacturer, Lexus, recommends using premium unleaded gasoline with an octane rating of 91 or higher for the LX 570. This recommendation is clearly stated in the owner's manual and is crucial for maintaining the vehicle's optimal performance and longevity.



Do all Lexus RX 350 require 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.