You are most certainly not going to get near advertised range doing a bunch of short drives. The main reason being that the cooling system needs to heat up the motors and battery while also cooling (or heating) the interior when you first begin a drive. That consumes A LOT of energy. Once the interior is at a good temperature and the battery and motors are in their efficiency range, your consumption will be generally consistent and considerably less than at the beginning of the drive.
There is also a perfectly good reason the car's consume energy while idle - they maintain battery temperature. Again, to do this the cooling system in the car needs to turn on, generate energy to either heat or cool the battery or the cabin (depending on your settings). Sure competitors don't do this, which is why you may see 20% battery degradation in the first year, or 50% or more after 5 years.
I would know, I own a 2016 VW eGolf. The good part is that it doesn't lose energy while sitting. The bad part is I lost 18% of my charging capacity in the first year, another 6% the second year, and another 3% the third year. At 36,000 miles it has almost 30% degradation. Meanwhile, my four year old Model S had about 6% degradation in TOTAL.
There's a lot of common misconceptions here. One of them I find kind of funny because Tesla really relies on it to get their perceived expertise!
- Outside of fairly cold temps (Winter), no heating of the battery or motors is occurring for a regular drive. It should be noted that for Model 3/Y, the motors are only heated to supply heat to the battery (shared coolant system), not because the motors need to be heated. But yes, if this occurs, it is a heck-ton of energy, far more than heating the cabin! As far as cooling the battery goes, it usually can cool it passively with the radiator just fine when occasionally necessary.
- The battery temperature is not really being altered in any meaningful way 90+% of the time while parked. They do as much as they can passively (without running the AC compressor and/or heating via the motors), which really doesn't require much power. It's a few coolant pumps and maybe a radiator fan for short burst. As far as anyone can tell, the grand majority of "awake" consumption is actually from computers. Ask any PC nerd what they can do with 200+W of computing power - that probably doesn't need to be running when the car is parked and not using sentry mode etc.
- The reason other EVs have historically degraded much faster is by far a function of their battery pack size, not their lack of active battery care.
For your eGolf, the numbers I could find are 83 miles to a charge, and 24.2kWh. For EVs today (and many Li-ion cells in general), cycle count is fairly comparable. While everyone lauds Tesla for paving the way with their Model S packs (shown to get ~1250 cycles lifetime), Nissan Leaf wasn't that far behind even in 2013 (~1000 cycle lifetime). As many know, the Tesla has active cooling and heating while the Leaf is entirely passive. However, if you compare
miles lifetime of these packs, they're incredibly different and the Nissan looks
terrible. Tesla gets around this by slapping huge batteries under their vehicles (which also mean their discharge and charge rates are probably comparatively nicer on the battery, extending lifetime even more). Even if Tesla got only 500 cycles (half of Nissan), they would still have a longer lifetime in
miles.
So your eGolf is implied to be around 434 cycles if all your energy was put to driving only. That's low for 27% reduction, but the degradation did slow down as expected. Teslas have this too (check all the "suddenly lost 10%" threads at early mileage, and Tesla hides the first part of this degradation), it's just part of life for Li-ion batteries. They have an initial dip, level out, then drop like a rock at end of life. I'd guess your actual cycle count is higher, as things like heating take a lot of the energy budget in a relatively small battery. Bigger batteries help in many ways.
Because Convenience. Tesla's never really go into deep sleep. The computers are constantly on and running, monitoring the battery and ready to roll at a moment's notice. If they allowed the car to go into deep sleep, people would be on this board, complaining about how "The car takes FOREVER to wake up when I want to drive! Tesla sucks! What if I were being chased by a Monster!? I can start an ICE faster than a Tesla wakes up!" and on and on.
It's rather like the fact that no one ever turns off their phone, computer, TV, etc. They just leave them on, constantly drawing power. Nevermind the OUTRAGEOUS waste of energy/carbon/general pollution that is required to keep the "cloud" running globally 24/7 so "green" people can post pictures of their fake meat burger to instagram.
Other EVs are all ready to go at a moment's notice too! Actually, Tesla is probably the
worst for that. The number of times I try a handle a number of times before succeeding? The black screens when I enter for ~2 minutes while it reboots? I'm 100% sure with other EVs you just unlock without thinking and drive away, and everything works. There is no advantage in roll-away time that Tesla is getting by keeping the car awake - other manufacturers
clearly don't have to do this.
As for your cloud point, the thing is people actively use those resources. It's not like Instagram is running idle servers - they actively provide a service
most of the time. And the data centers behind them are always looking at ways to save power - aside from the obvious cost savings, there's secondary benefits like decreasing the cooling power needed. While the power needs for server farms are incredible, they get a
lot done per watt.