For the 2021 Volkswagen Tiguan, both the low-beam and high-beam headlights use LED lighting. The supplied fitment data does not list a fog-light bulb.
Front turn-signal fitment depends on the headlight configuration: vehicles with halogen headlights use a 7507 bulb, while vehicles with LED headlights use LED lighting. The rear turn signal uses a 7440A bulb.
Several other exterior lights are LED, including the reverse, brake, center stop, daytime running, license-plate, parking, rear side-marker, step, and tail lights. The front side marker uses a 2821 bulb.
For interior replacements, the glove-box light uses 2821, while map and reading lights may use either 2825 or 98. Trunk-light fitment is listed as either 6411 or 6428, and the vanity light uses 6418. Confirm the original lamp and headlight type before ordering, especially for the front turn signal and interior locations with multiple listed options.