Xenon
For top-of-the-line performance, LED headlights are hard to beat. LEDs (light emitting diodes) offer long life, brilliant light output, durability, and energy efficiency.
Xenon headlights were one of the first upgrades over halogens. Xenon bulbs use electricity to ignite xenon gas to produce light rather than heating a filament. This allows xenon bulbs to last up to 3 times longer than halogens. Xenons also create a brighter, more uniform beam pattern to improve illumination while reducing glare. They provide moderately better visibility over halogens at a moderately higher cost. Halogen bulbs have been the norm for decades. LED headlights contain arrays of small LEDs in durable housings. Engineers carefully arrange the LEDs to produce complex beam patterns optimised for visibility.