For the 2000 Audi A6, the low-beam bulb depends on the headlight setup: H1 is listed for halogen headlights, while D2S is listed for HID headlights. No high-beam bulb fitment is provided in the supplied data, so compare the original bulb before ordering.
Fog-light fitment includes both H3 and H3C options. Front turn signals use 2357A or 2827, while rear turn signals use 7506. The reverse lights also use 7506. Brake, tail, and rear side-marker applications use 7528, and the center stop light uses 2723.
- Parking lights: 2357A with halogen headlights; 2825 or 98 with HID headlights.
- Front side marker: 2357A.
- License plate and step lights: 6418.
- Dome and engine lights: 6411 or 6428.
- Courtesy lighting may use 2825, 98, or 6418; compare the original bulb and listed option.