I added two versions. The difference between the versions is the thickness of the clip.The thin one fits better in my VW Golf, although in theory both fit.

I recommend to use a ABS (or pla+) filament, which can withstand warm temperatures in cars.

In addition, do not turn the ventilation too hot when the holder is in use!Keep the holder in the glove compartment!(Pla becomes soft and bends at high temperatures.)

Brim/Raft and supports are necessary to print. (Updated picture)