Well I can say that I am now the proud owner of Y in W/B/19.
First of biggest regret is not getting 20” wheels.
Ride quality is fine, I drove back to home 157 miles away and not an issue at all. I would actually say it was similar to M3. And certainly no harsher than one of my GLCs. Road noise was not bad at all, driving in battering rain and wind and was still able to hear.
Also, car was on 80% charge. Indicating 253 miles range but got home and it wasn’t far off the prediction.
The boot space is immense, I will say that the display, dash, doors are all the same as model 3. Everything else feels better quality! The mirrors, seats, lights, seated view and the sound are much better quality. Also weirdly the regen was staggeringly better than my 21 M3.
Sound proof windows rear
Heated wipers
Hepa bio filter
Ryzen processor
Parcel shelf
PPF
(although poorly applied!)
Any questions feel free to ask