For the 2012 Volkswagen Beetle, headlight bulb fitment depends on the headlight system. Beetles with halogen headlights use a 9003 bulb for both the low beam and high beam. Models with HID headlights use a D8S bulb for both functions.
- Daytime running lights and parking lights use 7443 with halogen headlights or are LED with HID headlights.
- The front turn signal uses 64136, while the rear turn signal uses 7506.
- Brake and tail lights use 7443R; the center stop light is LED.
- Reverse lights use 921.
- Front side markers use 2821, and rear side markers use 7443A.
- License plate and map lights may use either 2825 or 98. Interior applications also include 6411 or 6428 for the trunk and 6418 for the vanity light.