Does the 2024 Lexus RX 350 require premium gas in 2023?
Yes. The 2024 Lexus RX 350’s turbocharged 2.4-liter engine is designed to run on premium unleaded gasoline (91 octane or higher) for optimal performance and efficiency.
In practice, Lexus generally advises premium fuel for the RX 350, and using regular unleaded can reduce power and efficiency, trigger timing adjustments, and potentially affect warranty coverage if engine issues arise from consistently using lower-octane fuel. This guidance applies to the RX 350 with the turbo engine in both the 2023 and 2024 model years. Hybrid variants such as the RX 350h use different powertrains and may have separate fuel recommendations.
Fuel requirements for the RX 350
Key information about octane and fuel choice for the RX 350 is summarized below.
- Octane rating: Premium unleaded gasoline with an octane rating of 91 (AKI) or higher is recommended for the turbocharged 2.4L engine.
- Regular gasoline considerations: While 87 octane may be available in some markets, it is not the preferred fuel and can result in reduced performance, slower acceleration, and knock-sensor timing adjustments.
- Impact on performance and warranty: Consistently using lower-octane fuel than recommended can affect engine performance and, in some cases, warranty coverage, depending on regional policies and usage.
- Model-year scope: The guidance described here applies to the RX 350 with the 2.4L turbo engine in the 2023 and 2024 model years. The RX 350h hybrid has a different powertrain and may have different fuel recommendations.
Bottom line: for peak performance and to align with the engine’s design parameters, premium gasoline is the recommended choice for the RX 350’s turbo engine in 2023 and 2024 models.
Summary
The 2024 Lexus RX 350, powered by a turbocharged 2.4-liter engine, is designed to run on premium gasoline (91 octane or higher). While lower-octane fuel may be usable in some cases, it is not the recommended option and can compromise performance and efficiency. Always check the owner’s manual for your specific market and trim, particularly if you own a RX 350h hybrid, as fuel recommendations can vary by powertrain.
