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LED headlights available on Audi A8


LED headlights are available as an option on the new Audi A8, LED headlights are also available on the Audi R8 sportscar.  

Audi A8 LED headlights and Daytime Driving Lights(DRLs)

Audi says that the full LED headlights give the A8 an "attractive appearance even in daylight, and even more so after the fall of darkness. With a color temperature of 5,500 Kelvin, their light is similar daylight and thus is easier on the eyes and reduces glare."
The LED headlights are "zero-defectivenenss" and designed for the life of the vehicle. They also have low power consumption. The low beams, for example, consume only 40 watts per unit, a bit less than the already highly efficient xenon(HID) plus headlights.


The low beams comprise 10 individual lens modules extending through the headlight in a distinctive arc known as the "wing" owing to its shape. Just below this is another arc of 22 white and 22 yellow LEDs for the daytime running lights (DRLs) and the turn signals. These appear to the driver as homogenous, continuous strips of light.

Low-beam headlights and Daytime Driving Lights(DRLs)

Located above the "wing" are the high beams, whose light is generated by two powerful four-chip LEDs and a free surface reflector system. An assistance function changes between the low beams and the high beams. Additional high-output LEDs generate the highway light and the cornering light. A separate fan and heat sink regulate the temperature of each headlight unit and prevent condensation.


With the exception of the reversing light, the tail lights are realized entirely with LED lights technology, with each unit containing 72 LEDs. The designers used chip-on-board LEDs, which can be packed tightly together with high precision, in many areas due to the limited amount of space available.

Audi A8 rear lights
The tail lights, which consume only 9 watts per unit, form a trapezoidal outline that appears as an even, homogenous strip. Its upper part is a light guide—a plastic tube—and the lower section is a textured, reflective freeform surface. It is thicker than the upper segment to optically lower the center of gravity of the A8’s tail end. The turn signal is located on the upper part of the tail light and forms a wide, horizontal stripe.

Ambient lighting in Ivory
The five-segment brake light is installed inside the trapezoid outline. When the new A8 reduces speed strongly, the brake light flashes quickly to warn the traffic behind it. The hazard warning lights are activated when the car stops. Some of the LEDs in the brake light can be controlled in such as way as to serve as the rear fog light.


The A8 also has an optional ambient lighting package. LEDs will light up the center console, tunnel, door pockets and door sill trim. Drivers can choose from three interior LED colors (Polar, Ruby, and Ivory), and can also change the brightness via the Audi Multimedia Interface (MMI).


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