
Lexus UX can use 92, 95, or 98 octane gasoline. More information about the Lexus UX is as follows: 1. The Lexus UX is a compact SUV under the Lexus brand, officially launched in Hangzhou on January 23, 2019. The new car is built on the TNGA architecture and comes with two powertrain options: a 2.0L engine and a 2.0L hybrid, offering a total of 6 models. 2. The new Lexus UX is equipped with a 2.0L naturally aspirated engine paired with a Direct-Shift-CVT transmission, delivering a maximum power of 127kW (173PS) and a maximum torque of 207N·m.

I've been driving a Lexus UX for a while now and always stick to 95-octane gasoline, as the official manual clearly recommends using unleaded fuel with an octane rating of 91 or higher. The UX series, including the common UX 200 and hybrid UX 250h, features engines with relatively high compression ratios, which require higher-octane fuel to prevent knocking—such as premature ignition of gasoline in the cylinders that could damage internal components. I once tried using 92-octane fuel, and the engine started to vibrate slightly while fuel consumption also increased a bit. After switching back to 95-octane, the issues disappeared. Although higher-octane fuel is more expensive per liter, it optimizes performance and extends engine life, averaging out monthly costs to about the same while being more reliable. During regular maintenance, technicians also emphasize not to skimp on fuel quality by using lower-octane options, as it could trigger warning lights or increase repair costs. In short, new owners should simply follow the manual's recommendations for the safest approach.

As someone frequently involved in vehicle maintenance, the Lexus UX typically requires unleaded gasoline with an octane rating of 95 or higher, meaning fuel with an octane rating above 91. This is because the UX's engine is designed with precision and has a high compression ratio. Lower-octane fuels like 92 can easily cause knocking under high temperatures, which sounds like metal knocking noises, and prolonged use can damage piston rings and cylinder walls. Hybrid versions like the UX 250h are also equipped with electronic control systems that will intervene to limit power if abnormal vibrations are detected, affecting driving performance. I recommend owners prioritize using 95-octane fuel from reputable gas stations to avoid impurities from low-quality fuel additives. This helps maintain higher combustion efficiency, reducing carbon buildup and emissions. In repair cases, I've seen several instances where using 92-octane fuel led to major engine overhauls, ultimately costing more.

I believe choosing the right gasoline is crucial for the Lexus UX, and I recommend using 95-octane unleaded fuel. High-grade gasoline like 95-octane, with a research octane number (RON) above 91, ensures more complete combustion, reduces pollutant emissions, and is more environmentally friendly. The UX already has good fuel efficiency, and with 95-octane, the power delivery is smoother, slightly more fuel-efficient compared to lower grades like 92-octane. Overall, the difference in running costs is minimal, and it can even extend the engine's lifespan. Don't risk using lower-grade fuel—if issues arise, it could end up costing you more time and money. This advice is simple and practical.


