Which is brighter for car headlights, xenon or LED?

[Monica]

Xenon car headlights are brighter. Xenon lamps produce light by using a ballast to instantly boost the 12V or 24V voltage to 20,000V, which ionizes the inert xenon gas to emit light. The xenon lamp is filled with xenon gas in a quartz glass tube, and then the vehicle's 12V power supply is instantly increased to 23,000V through a booster. Under this high voltage, the xenon gas is ionized and generates a light source between the two electrodes. In the automotive lighting field, xenon lamps are also called HID (High-Intensity Discharge) headlights. They replace traditional tungsten filaments with high-pressure xenon gas enclosed in quartz tubes, providing higher color temperature and more focused illumination.