Yep the RCN 210 is a perfect fit more than happy with mine
Links are for illustration I am not selling these
No recommendation just for illustration of parts required
The RCN210 was a good option for me also a polo 9n3
https://uk-polos.net/viewtopic.php?f=43 ... 38#p537738
Straight forward install just needed a quadlock to ISO adapter
https://www.ebay.ie/itm/CT20VW02-VOLKSW ... 58e13ea3ac
You will need the old radio removal keys
https://www.ebay.ie/itm/AUDI-VW-CD-PINS ... 5d3a1611e4
Speakers i bought
https://www.ebay.ie/itm/VW-Polo-4-9N3-0 ... 5d75b6c5fa
The radio I bought came with the can bus simulator
https://www.ebay.ie/itm/Car-Radio-RCN21 ... 363b18181f
Has micro SD card Slot USB slot Aux in + bluetooth
The First radio that they sent the display did not work
but after sending the photos of the radio working but no display they quickly dispatched another that worked fine ( did not have to send back the old one )
The radio removal tools were a bit flimsy and bent easily but I did get the old radio out wit them
There are two wires that need to be connected
A ignition 12v+
and an illumanation orange wire for the backlight to be connected to the lighting circuit
Both of these connections can be found at the cigarette lighter
the speakers were a little more difficult had to drill out the rivits to frr the old speakers
Adapters came with the new speakers for the wiring so that was easy
I had intended to connect the old speakers into the rear doors but have not got round to it yet as there is no wiring there yet