What I'm wary of is the re-sale value (if any) of these first(?) generation new fangled electric cars. I mean you can buy any car you want, but in a few years when cars start costing money, sure as shit the owners start to realise the true cost of the car.
EV's aren't really new fangled. Successful ongoing lines have been out for nearly a decade and similar EVs go back longer if you count less successful lines. You can find answers to most of your questions if you have a look around, stuff ain't exactly new.
Current new model EVs are direct second generations with third generations due soon, the "first generation" of current EV designs came around 2010. For example:
Nissan Leaf first gen MY 2011, second gen MY2018
Chevrolet Volt first gen MY 2011, second gen MY2016
There are of course similar EVs which go further back but their lines have been discontinued e.g. The
Mitsubishi i-MiEV (which is generally regarded as terrible) and less similar EVs even further back before li-ion tech but those are definitely irrelevant.
Depreciation seems to be all over the place however. The Tesla Model 3 has only depreciated and by 10.2% in 3 years which is ridiculously low compared to market averages.
"Tesla Model 3 retains almost 90% of its value over 3 years, study shows". The original study is
here. Other Teslas models also well keep their value much better than most cars but EVs from other manufacturers drop off pretty fast. From that above original study:
“Categorically, electric vehicles depreciate more than the average vehicle because resale values take into account the $7,500 federal tax credit and other state and local credits that were applied to these vehicles when they were bought new,” said [iSeeCars CEO Phong Ly]. “Because the technology of EVs changes at a rapid pace, obsolescence also plays a role in their dramatic depreciation as well as consumer range anxiety and lack of public charging infrastructure.” However, Tesla vehicles defy this trend and depreciate far less than the segment average.
That deprecation seems to be due to rapid developments in EVs and thus lower desirability of old EVs rather than old EVs costing too much to run in most cases. I think Teslas have an advantage due to their on going over the air updates, excellent battery lifetime and limited availability making them much more desirable than the old Leafs which had major problems with their battery design and their styling looking...not so sexy.
One thing that is consistent across all markets is that eventually the car will require replacement parts. What is not clear is if the EV car will be able to be repaired cost effectively.
Plenty of studies looking at costs of ownership for EVs and deprecation.
First party case study on maintenance costs for a Tesla Model S done by a company running a regional shuttle service has
$US 19k after 400 000 miles which includes two under warranty battery swaps at 194k miles and 324k miles though this is a bit of an extreme case due to constant supercharger usage. In their latest service logs
here, maintenance cost per mile is
$US0.07/mile compared to their estimated
$US0.22/mile for a similar luxury sedan (Lincoln Town Car). Costs of ownership (Maintenance, repair, fuel etc.) is well known to be much lower than ICE cars.
What happens when an owner of an EV receives a ridiculous quote from a dealer to replace the battery?
As for what happens when batteries need replacement. I did some digging in a previous thread
here. Replacement for a top of the line leaf battery is about
$AU10,700 for a 40kWh battery direct from manufacturer with people getting quoted
$AU10.5k for a 24kWh after labour from Nissan in Australia. Cost/kWh lifetime throughput was pretty comparable to a residential ESS powerwall system. Upfront cost per kWh capacity is also quite good. That being said
this bloke got stiffed for $AU33k and more across the world also getting charged about
~$US33k for dealership battery replacements. The difference appears to be to $10k is under a replacement program for out of warranty first gen leafs which are notorious crappy batteries (
source) then $33k would be for a completely uncovered new battery? Again data on battery degradation,
especially Tesla vehicles shows battery degradation is unlikely to be what's letting you down.
Will that attract a amateur mechanic to attempt to swap out a battery with hundreds of watt-hours of capacity?
Not sure about the amateur and hundreds of Wh part (would probably blow up or not move if a <1000Wh battery was fitted) but
after market battery replacement is already happening. "
$2,500 to $3,500 for 24 kWh pack replacements"