Does 2024 Lexus Rx 350 Require Premium Gas Tank Size. Most 2024 and 2023 models require premium unleaded gas with an octane rating of 91 or higher. Just started looking into the 350h as an upgrade from my 2016 rx 350.

View detailed specs, features and options for the 2024 lexus rx 350 rx 350 luxury awd at u.s. Use of unleaded gasoline with an octane rating lower than what is listed for your model year vehicle could potentially result in engine.