Yes, 0% or 1% loss per day without sentry mode. When I first noticed I was dumbfounded. And they have this setting "sentry mode only at home", so when you forget about that and do your 50% battery charge travel and park the car for the weekend, then you come back on sunday to a ~30% charge you cry inside

I once left my Tesla unplugged for 5 days and it lost 1%.

So effectively, it should be pretty close to 0%. Even if we assume maximum rounding error (ie, maybe it actually lost 1.9%?), maybe round that up to 2%, 5 days to lose 2% means it takes 50 days to lose 20%. 100 days to lose 40%.

If the car is working properly, then vampire drain is a complete non-issue except for an exceptionally rare scenario where you don't drive and can't plug it in, not even into a standard household outlet, for more than 3 months.

not entirely, but it's maybe 1-3% over a week depending on the outside temperature