It's literally quieter than a bicycle, except for a whirring when the car powers up. We've come across people and animals standing in the middle of the road because they didn't realize the car was right behind them.
Soundproofing is good too. It comes with karaoke built in and it's more sound proof than many karaoke rooms.
Suspension is much better than my previous car but I'll reserve judgement until it's also 5 years old.
Seats are comfortable enough to sleep in - some people are even using it as an alternative to a hotel, because you can keep the air-conditioning on all night and the seats go all the way down to a horizontal position. There's a window up top so you can watch the stars at night too.
Also the seats have air-conditioning in case your back is hot too.
BYD's seem (super subjective) to make less road noise outside of the vehicle. I still get snuck up on by them in car parks, but I have tuned in to the Tesla hum and can hear them a while off.
That makes it easier for brands who sell cheaper models imho. It is all about status, and right now having an EV and a fricking 17" TV on the dashboard trumps everything else.