For the 2015 Audi A7, the listed low-beam and high-beam headlight fitment is D3S. This applies to both primary headlight functions in the supplied data, so verify the existing headlamp system and connector before ordering replacement bulbs.
The front turn signal uses a 5200 bulb, while the cornering light is listed as H7 LED. No fog-light bulb fitment is provided for this model year in the supplied data.
Other useful exterior sizes include 921 for the reverse light and 2825 for both front and rear side markers. Interior applications include 6411 for the dome light, 6418 for the vanity light, and 2825 for the glove box, other interior lighting, and trunk light.
Because bulb requirements can depend on the vehicle’s installed lighting equipment, compare the original bulb markings and socket configuration with these listings before purchasing, particularly for the D3S headlight bulbs and H7 LED cornering light.