The 2010 Volkswagen GTI uses a D1S bulb for the low beam. High-beam fitment varies, with H15 or D1S listed depending on the headlight setup, so confirm the installed headlamp type before ordering.
Daytime running light fitment follows the headlight configuration: H15 is listed with halogen headlights, while HID headlights use LED daytime running lights.
- LED tail lights: reverse lights use 921 bulbs, brake and tail lights are LED, and the center stop light is LED.
- Non-LED tail lights: reverse and tail lights use 921 bulbs, while the brake light is listed as 921.
- The rear turn signal uses a 7440A bulb.
- Front parking and license plate lighting may use 2825 or 98 bulbs.
- The front side marker and step light use 2821 bulbs.
Interior fitment includes 6418 bulbs for the dome and vanity lights, 6411 or 6428 for the trunk light, and 2886X for the door-mirror light. Check whether the vehicle has halogen or HID headlights and LED or non-LED tail lights before purchasing replacements.