The Lexus UX 300e comes with an industry-leading 8-year/160,000 km battery warranty, with an optional extension. For the Lexus UX 300h, Lexus Malaysia provides an 8-year unlimited mileage warranty for the hybrid battery. For buyers considering the Lexus UX, that matters because it affects how easy the car is to live with, whether for commuting, family use, long-distance driving or ownership costs. The useful way to read this is not as an isolated specification, but as a clue to how the car will feel in real daily use.