2018 Audi A7 bulb fitment information supplied for this model year does not list a bulb size for the low-beam or high-beam headlights. Because no headlight bulb code or configuration distinction is provided, confirm the existing bulb and headlight assembly before ordering replacement headlight bulbs.
The supplied data does identify several locations using a 2825 bulb:
- Front side marker: 2825
- Rear side marker: 2825
- Glove box: 2825
- Interior lighting: 2825
No fitment data is supplied here for the fog lights, front turn signals, or reverse lights. Check the vehicle’s original bulb, socket, or service documentation for those applications rather than assuming they share the 2825 size.