For anyone interested, I did a 0-60 test on my '23 C 400 GT recently:
This was near the very end of a six-hour (including an hour for lunch) goofing-off day, so the bike was certainly fully warmed up.
By the way, I did prior tests on this scooter -- 10.3, 9.0, 9.5, 9.4, respectively (and one...