background: I had a model 3 for a couple of years and now have a Y ( no longer have the 3). The 3s are insanely quiet. The Y is ok but has a whistle at certain cruising speeds (90-100km/h).

But when they are supercharging they are both ridiculously loud. Like having AC on full bore. Also starting a charge makes the most bangs and pops, regardless of the charger type.

I just finished a 2000km drive and slept in the back on a sleeping mat. Sometimes I parked right next to the highway where trucks were flying past. It was almost silent inside, they really are well insulated from external noise.