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What type of gas does Lexus GS take?

The Lexus GS, a luxury midsize sedan, is designed to run on premium unleaded gasoline, typically 91 octane or higher. This is the recommended fuel type for the Lexus GS to ensure optimal performance and fuel efficiency.


Lexus GS Fuel Requirements


According to the Lexus owner's manual, the Lexus GS requires the use of premium unleaded gasoline with a minimum octane rating of 91. This is because the Lexus GS engine is designed to take advantage of the higher octane rating, which helps prevent knocking or pinging during combustion. Using a lower octane fuel could result in decreased power, reduced fuel economy, and potential engine damage over time.


Why Premium Fuel is Recommended


The Lexus GS is equipped with a high-performance engine that operates at higher compression ratios compared to standard gasoline engines. Premium fuel, with its higher octane rating, is less prone to premature ignition, or "knocking," which can occur in high-compression engines. This knocking can cause damage to the engine over time, so Lexus recommends using premium fuel to ensure the engine runs smoothly and efficiently.


Consequences of Using Lower Octane Fuel



  • Decreased power and acceleration

  • Reduced fuel economy

  • Potential engine damage due to knocking or pre-ignition

  • Voiding of the vehicle's warranty if damage is caused by using improper fuel


While it is possible to use a lower octane fuel in a Lexus GS, it is not recommended, as it can lead to these negative consequences. Lexus strongly advises owners to use the recommended premium unleaded gasoline to maintain the vehicle's performance and protect the engine.

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


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.



Can you mix 87 and 91 gas?


Is it bad to mix premium and regular gas? Well, not necessarily. If your car requires premium to run smoothly, but you aren't able to find a station with premium gasoline, it won't hurt to top off with regular gasoline. You do want to avoid running on regular gasoline for extended periods of time.



Does the Lexus GS need premium gas?


If you value extracting the best from your Lexus GS 350, premium gasoline is the recommended option. However, if cost is a primary concern, and you're willing to compromise on performance and efficiency, regular gas may be a viable alternative, albeit with potential risks to engine health over time.



Is it worth putting 91 instead of 87?


Does Premium Fuel Make Your Car Run Better? Some drivers swear that using a higher-octane fuel is better for a car's performance, but it's not. Engine computers can usually adjust their timing to account for the increased octane levels, so if you put premium gas in a regular car, you probably won't notice anything.



Which Lexus models do not require premium gas?


A luxury vehicle like Lexus may need premium fuel, but the answer to these questions is actually model-specific. Some vehicles, like the Lexus UX 250h, can utilize regular 87-octane fuel, whereas other models, like the 2022 Lexus GX, require premium 91-octane fuel, so the Lexus gas type depends on the model.



What kind of gas does a 2008 Lexus GS 350 take?


Premium unleaded



Does Lexus 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.



What happens if I put 87 instead of 91?


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.



What kind of gas does a 2014 Lexus GS take?


Most Lexus models require you use at least 91 octane (premium) gasoline, while there are a few that can use 87 octane regular unleaded.



Can I use 87 gas for Lexus?


Some Lexus vehicles will require premium 91-octane fuel while others can use regular 87-octane fuel. If you're wondering, “Do you have to put premium gas in a Lexus?”, it's best to find the recommended Lexus gas type in your owner's manual.


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.