There's a note in my user manual (page 102) saying that the mirror fold is not active above 40 km/h. This means that the control is quite sophisticated and probably done by some computer device (how many are there on this car I wonder). Probably just need the right software/firmware.
I don't believe the mirrors fold on the new Polo.
On an Audi A1 for an extra £225 you can have:-
"Door mirrors – heated and folding. Includes heated washer nozzles and "folding on locking’ function"
So maybe the software is there on recent cars?
I bet most of the electronics are common between
Ibiza and A1 - even the pedals look identical in the pictures I've seen!!
By the way have you ever taken an Audi A1 SE and added in all the options that are included in an
Ibiza 1.2 TSI SE with Winter Pack? I did and it costs loads.