I have to say that as an owner of both a Roadster, Model S, and "Electronaut" to BMW ActiveE... Vampire loss seems to be a problem with both Teslas (and my Model S was delivered with firmware 5.6) at a greater degree than on the ActiveE.
Seeing that the i3 uses the same batteries and motor as the ActiveE, I would surmise that it would perform similarly.
Looking at my energy consumption at home. The Roadster gets parked longer as that is my wife's car and we use the ActiveE when we carpool, I can see that the car will let itself drain a bit before it starts to recharge itself (and boy can you tell when it's recharging.)
I just got the Model S last Friday and am having it worked on to get the Xpel Ultimate wrap and other aesthetic fixes. At the shop, they charged it up with 110V overnight Sunday to Monday to get the range back up to approx around 197 miles rated range (using the iOS App to check on the telematics) and today (Wednesday, I just checked at 0757 Pacific Time) it has 188 miles rated range. Granted the icons to the car shows that all the doors and the frunk are open (and have been for a few days) so I wonder if there is a large drain leaving it in that condition while they work on it.
I've left the Active E at LAX for about a week back when the parking for EVs was free and did not notice any degradation in rated range or its state of charge.
So, each manufacturer implementation of active thermal management and the chemistry of each battery pack probably creates these results. (It could also be their algorithms for stating rated range, however the ActiveE does provide SOC in percentages, so... As does the Roadster using OVMS).
I made the conscious decision to factor in the extra "cost" of energy losses while the vehicle is parked and still decided to go with them.
MPT care to chime in, you have both the Roadster and Active E (and a few other EVs...)
Woof? I believe you have both the Model S and Active E as well...