What kind of gas does a Lexus GS 350 take?
The Lexus GS 350 generally runs on regular unleaded gasoline with an octane rating of 87 or higher. For optimum performance and smoother operation, premium fuel (typically 91–93 octane) is recommended in many markets.
Fuel compatibility can vary by region and model year. The GS 350 uses a 3.5-liter V6 with direct injection and generally accepts gasoline with up to 10% ethanol (E10). Always check the owner's manual or the fuel-filler door label for the exact requirements for your car’s year and market, as specifications can differ.
Fuel octane guidance by region and performance considerations
Here is a concise guide to octane ratings and fuel choices you’ll likely encounter for the GS 350:
- United States and Canada: Regular unleaded gasoline with an octane rating of 87 AKI is acceptable. For best performance and engine efficiency, Lexus often recommends using premium gasoline in the 91–93 AKI range when available. The GS 350 is compatible with E10 gasoline (up to 10% ethanol); avoid high-ethanol blends beyond what the manual allows (such as certain E15/E85 blends) unless explicitly approved for your model year.
- Europe and the United Kingdom: Premium gasoline with 95–98 RON is typical, and using premium is generally recommended to maximize performance and efficiency. Ethanol blends like E10 are common in many areas and are supported by the vehicle; follow local guidance and the manual for exact requirements.
- Other markets: Follow the local Lexus guidance for octane and ethanol content. In many cases, regular 87 AKI is acceptable, with premium 91–93 AKI recommended for peak performance; ethanol compatibility usually aligns with regional fuel standards (E10 is widely used).
Always refer to your specific model year’s owner’s manual and the fuel-filler door label for the exact octane and ethanol guidance.
Summary
The Lexus GS 350 typically takes regular unleaded gasoline (87 octane) but benefits from premium (91–93 octane) for maximum performance. In Europe, higher-octane fuels (95–98 RON) are common. The engine generally supports E10 ethanol, but check your manual for exact regional allowances and avoid higher-ethanol blends unless approved for your year and market.
