When doing replacement or upgrading on 2008 Volkswagen R32 with capsule halogen headlamps HID, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

Low Beam Headlight2008 H7
High Beam Headlight2008 H7
Front Fog Light2008 9006
Back Up Light2008 1156
Brake2008 1156
Dome Light2008 578
Front Side Marker2008 12961
Front Turn Signal2008 1156
License Plate2008 12844
Parking Light2008 194
Rear Side Marker2008 12961
Rear Turn Signal2008 1156
Tail Light2008 1156
Luggage Compartment2008 6411
Door Mirror Illumination Light2008 194
Glove Box2008 12256
Map Light2008 12961
Stepwell2008 12256
Low Beam Headlight2008 D2S
High Beam Headlight2008 H7
Front Fog Light2008 9006
Back Up Light2008 1156
Brake2008 1156
Dome Light2008 6411
Front Side Marker2008 12961
Front Turn Signal2008 H21W
License Plate2008 12844
Parking Light2008 194
Rear Side Marker2008 12961
Rear Turn Signal2008 1156
Tail Light2008 1156
Luggage Compartment2008 6411
Door Mirror Illumination Light2008 194
Glove Box2008 12256
Map Light2008 12961
Stepwell2008 12256