The gasoline grade recommended for the Lexus TX is a common consideration for prospective and current owners. Vehicle manufacturers specify fuel requirements based on engine design and performance targets. Using a lower octane fuel than recommended might, in some cases, impact engine efficiency and potentially long-term reliability.
Adherence to the manufacturer’s fuel recommendation is generally advisable to maintain optimal engine performance and fuel economy. Doing so ensures the vehicle operates as intended and helps to avoid potential issues related to improper fuel combustion, such as knocking or reduced power output. The long-term impact of using a lower grade fuel depends on the specific engine design and driving conditions.