Does the 2024 Lexus RX 350 require premium gas?
Yes. The 2024 RX 350’s turbocharged 2.4-liter engine is designed to run best on premium unleaded gasoline (91 octane or higher).
In this article, we break down what that means for fueling your RX 350, how octane levels affect performance in turbocharged engines, and what to know if premium gas isn’t readily available in your region. We also cover regional variations and practical tips for maintenance and warranty considerations.
Fuel requirements and octane specifications
To help you understand the octane recommendation, here is a quick reference:
- Recommended octane: 91 AKI (premium unleaded); using premium gasoline helps ensure optimal power, throttle response, and fuel efficiency.
- Regular gasoline: 87 octane is not recommended for normal operation and may lead to reduced performance and efficiency; in high-load or hot conditions, timing may be adjusted to prevent knocking, further diminishing power.
- Regional variations: Fuel octane systems vary by market. In many regions, premium fuels align with higher octane numbers (RON) such as 95–98; always check the local owner’s manual or fuel labeling for your market.
Bottom line: Using premium gasoline as specified yields the best performance and efficiency, while lower-octane fuel can degrade performance and efficiency over time.
Regional variations and practical notes
United States and Canada
In North America, Lexus typically specifies Premium Unleaded gasoline with an octane rating of 91 or higher for the RX 350. Regular 87-octane can be used only as a temporary alternative in rare cases, but sustained use is not advised if you want maximum power and economy.
Europe and other markets
Many regions use different octane labeling, with premium fuels often starting at around 95 RON or higher. Verify the exact requirement in the local owner’s manual, since regional fuel standards and labeling differ.
Warranty considerations and fueling tips
Following the manufacturer’s octane recommendations helps ensure engine performance and may influence warranty coverage related to detonation or engine damage. If you must use lower-octane fuel due to availability, avoid sustained use and refuel with premium as soon as possible. Retain receipts and check local dealership guidance if operating outside the recommended range.
Summary
The 2024 Lexus RX 350 generally requires premium gasoline (91 octane or higher) for optimal performance from its turbocharged 2.4-liter engine. Regular gasoline is not ideal and may reduce power and efficiency; regional variations exist, so always consult the owner’s manual for your market and follow the pump labeling when fueling.
What is the weakness of the Lexus RX 350?
Early Lexus RX 350 releases experienced steering issues, notably power steering fluid leaks from the rack and pinion system. Not only is this a massive safety hazard – it can also be costly to repair.
Which Lexus models do not require premium gas?
If you're looking for a Lexus that runs on 87-octane fuel, there are a few options in the lineup: Lexus ES (ES 250, ES 350, ES 300h) Lexus UX (UX 250h) Lexus NX (NX 250, NX 350, NX 350h)
Does a Lexus RX 350 require premium gasoline?
You can put premium gas in your Lexus RX, and it can provide better performance, but it's not a requirement. Any gas that's put in your Lexus RX shouldn't be higher than 15% ethanol. If gasoline at the pump has more than 15% ethanol, or it's labeled as a flex-fuel, it shouldn't be used in your RX.
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.
