Had a hard time finding a printable cupholder for a mk3 golf that wasnt in the doorpocket, or hang so low and was so big that you hit your knockels on it every time you shifted gears, so i tried to make one myself.. Been through about 5 redesigns so far and come to one im pretty happy with wich is marked V3 with a better fit and more support for cans especially the tall 500ml cans so there is no chance of them wobbeling in the cupholder and spillingover.

V2 - is the first design that worked somewhat well but tall cans arnt stable in it

V3 - is V2 with a real tight fit on normal sized cans so theres on chance of them wobbeling and spilling (i do not know if bottles fit in this design as i dont have any to test with)

V4 - is my latest revision that moves the cupholder 30mm further to the passenger side and about 10mm further up as i grew tired of hitting my knee on the previous version a few times. (do note that this version completely obstructs the rearwindow defrost button)

Now about the cupholder:
the cupholder hangs on the front of the ashtray, it does slightly obstruct the rearwindow defrost button (and what other buttons you might have in that row) but it can still be pressed. (Note that V4 completely obstructs the buttons as its moved up a bit more for extra gear shifter clearance)

Ive printed in PETG on my Bambulab A1
0.4 nossle
0.16 layerhight
3 walls
gyroid infill
Printed upside down and used tree support for the bottoms of the cupholder, nothing else needs support.