Hyundai Tucson (NX4) 2022-2025 Owner's Manual: Before Using Driver Assistance System
WARNING Always maintain a safe distance from the vehicles ahead and adjust your vehicle speed to the road conditions. Driver Assistance system may not operate in all situations and cannot avoid all collisions. To prevent serious injury or death: Control your vehicle at all times. In ...

Hyundai Tucson (NX4) 2022-2025 Owner's Manual: Fuel Requirements
Gasoline Engine Unleaded Your new vehicle is designed to perform optimally with unleaded fuel having an octane number ((R+M)/2) of 87 (Research Octane Number 91) or higher. Your new vehicle is designed to obtain maximum performance with UNLEADED FUEL, as well as minimize exhaust emiss ...