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Does Lexus LS require premium gas?

Yes, the Lexus LS luxury sedan does require premium gasoline, typically 91 octane or higher. This is a common requirement for high-performance engines found in many luxury and sports cars.


Lexus LS Engine and Fuel Requirements


The Lexus LS is powered by a powerful V6 or V8 engine, depending on the model. These engines are designed to operate most efficiently and deliver maximum performance when using premium fuel. The use of lower-octane regular gasoline can lead to engine knocking, reduced power, and potentially even long-term damage to the engine components.


Lexus recommends that LS owners always use premium gasoline with a minimum octane rating of 91. Some models may even specify 93 octane fuel for optimal performance. Using the recommended premium fuel helps ensure the Lexus LS engine runs as intended by the manufacturer, providing the best balance of power, efficiency, and longevity.


Why Premium Fuel is Recommended



  • Engine Design: The high-compression engines in luxury vehicles like the Lexus LS are engineered to take advantage of the higher octane rating of premium gasoline. This allows for more advanced ignition timing and higher compression ratios, resulting in increased power and efficiency.

  • Fuel Efficiency: Premium fuel typically has a higher energy density than regular gas, meaning you'll get slightly better fuel economy when using it in a vehicle designed for it.

  • Engine Protection: The higher octane rating of premium fuel helps prevent engine knocking and pre-ignition, which can cause damage to engine components over time.


While premium fuel may cost a bit more at the pump, it's a necessary expense for maintaining the performance and longevity of a high-end luxury vehicle like the Lexus LS. Owners who use the recommended premium gasoline can expect their LS to deliver the full power, efficiency, and reliability that Lexus engineered it for.

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.