Are you thinking of older Vespas? There's a few modern ones near me and they've never struck me as overly noisy.
I'm talking about the Vespas I actually experience on a daily basis. I don't know if they're new or old, but I can assure you that they are loud and smoky.
Yeah I have no idea what they are talking about
I have a 150 4-stroke that is fuel injected and it’s way quieter than any motorcycle and has very little exhaust smell
A guy across the street from me has a new one. It's loud as hell, but this guy is the type to remove his muffler to make whatever car he has this week sound "cooler". I'm not ready to blame the scooter yet.