Different types of lighting
Xenon lights
From the early 2000s, Xenon became the new standard in luxury cars. The bright, bluish light comes from a gas discharge instead of a glowing wire. Xenon produces a lot of light, with a wide beam and a good view on wet asphalt, something that halogen lamps had trouble with. The drawbacks? Xenon lights become less bright as they age, they sometimes take time to reach full power, and ballasts and detonators can be expensive when they break. Nevertheless, Xenon remains a big step forward compared to traditional lighting.
LED lighting
LED is now the new norm. They are more economical, brighter and often last a car's lifetime. The light is bright white, which increases visibility and reduces fatigue. In addition, LEDs can be precisely controlled, making advanced systems such as matrix headlights possible. They automatically switch off segments of the light beam when traffic approaches, so you can keep the high beam without dazzling anyone. The downside? In the event of a defect, the entire unit often has to be replaced, which can be costly.
Laser lighting
The latest generation, found in top models from BMW, Audi and Mercedes, is laser light. Lasers are not a light source on the road itself, but are used to project an extremely strong beam of light onto a phosphor lens. The result is an incredibly bright and far-reaching light that illuminates the road hundreds of meters away, ideal for highway use. The system switches back automatically to prevent glare. The disadvantages are mainly the cost and complexity. Laser lights are expensive to purchase and repair, and are therefore not yet widespread.
For drivers, this means that your light quality depends a lot on the technology in your car and how you use it. A powerful LED or laser beam is useless if your rear lights are off at dusk or if your fog lights dazzle others. Incorrectly adjusted lights, especially Xenon or LED, are also notorious for the MOT and can lead to rejection.