2022 Audi A3 bulb fitment centers on D4S bulbs for both the low-beam and high-beam headlights. The supplied fitment data lists the same D4S size for each headlight function, with no projector or non-projector variation specified.
- Low beam: D4S
- High beam: D4S
- Fog light: H11
- Cornering light: H8 LED
For interior and convenience lighting, the 194 bulb is listed for the dome, glove box, map, trunk, and other interior positions. Check the existing bulb and connector before ordering, especially for the H8 LED cornering light, since this is identified as an LED-specific fitment. Front turn signal and reverse-light bulb sizes are not included in the supplied data.