The Volkswagen ID.4 has two credit card slots on top of the center console. These two slots are ideal for attaching a phone mount.
The design has two slots in the stand, accordingly, where two printed cards can be inserted appropriately. These printed cards are twice as thick as standard cards, as two cards fit into each slot in the ID.4 (don't be surprised about the angle because the slots in the ID.4 are not parallel to each other!). The small card must go in the back slot, the large card in the front slot.
The ball, which is attached to the stand with an Allen screw, has a diameter of 17 mm and is therefore suitable for standard phone holders. You need a M4 x 30 Allen screw and a M4 nut.