As a 4 month owner of the 2020 Vado 3.0, it is definitely a class 3. I live in US/Massachusetts.
Interesting is that a class 1 sticker came with the bike, but class 3 sticker on bike. On the flats reasonably easy to hit 21-22 mph in eco mode with factory settings. 25 + requires a jump to sport or turbo in 9th gear for this 74 year old & you are working @ it. Love to overtake the youngsters on road bikes spinning @ a furious rate....a real equalizer & a reminder of younger days before eBikes.
With eBike, no excuse to ride on windy days, heat, etc. Brose motor does encourage spinning over 80 rpms for best efficiency as stated by Stephan Mike. Thanks again to all on this forum as it has been very informative across so many areas!!!