Interestingly enough Tesla have previously only quoted their Scope 1 and 2 figures for emissions, but new legislation has forced them to release their Scope 3 figures taking the C02 figure from a reported 2,500,000 tonnes to 30,500,000 tonnes (I have seen figures that differ slightly from those, but in general they are a reasonable average of ones doing the rounds). Which apparently puts them on a more equal footing to someone like Ford when overall size is taken into account.
The graph you show is interesting, the article it comes from is very thorough, but it does mention much later on, that some of the figures it talks about assume the battery last to EoL. I know that If I had a 300 mile range EV which in the winter struggled to top 220 real world miles and then after several years it was down to 80% range which in turn led to me getting less than 180 miles/charge, I would want a new battery. A big battery will be around £6-9k depend on size and manufacturer, but in a green world, we will keep our cars much longer. Also, the greenness of the energy in manufacture and use of the cars also depends on the country you make and drive these EVs and that in turn can alter overall figures depending on how much fossil fuel that country of manufacturer and charging, uses.
That massive new battery factory they are once again saying they are going to build in Northumberland will be interesting to follow. I can see that to keep cost down (now the government has come to some sort of 'deal' with the Aussies), there will be some fudging of the green credentials in the build and a lot of concrete being used and not the more expensive green concrete either. But as I say, time will tell on that one.
As I say, I'm not against EVs, but an inefficient Hydrogen production which produces very little absolute GHG vs a battery which may be clean in running, but produces a very large CO2 amount in mining, refining and construction, I prefer the inefficient plugging away Hydrogen manufacture. Storing electricity is still basically rubbish (big, heavy and expensive), but hopefully the next generation of battery will appear in my lifetime, possibly even before I reach state pension age...hopefully. My EV has a battery just shy of 13kW/h, of which around 10kW/h hours are available for drive (and heating). Putting a meter across the charge cycle shows I need over 12kW to charge the 10kW that the battery wants. I assume that much of this is inverter loss, but Peugeot doesn't say, at least nothing I found yet shows a break-down on battery charging inefficiency. If that figure is a scalable one, then you need 20% more juice than you get back from your battery. I suspect the smaller size and quite possibly the battery is less sophisticated than some, but I say what I see in my case. I've spent a lifetime working with rechargeable batteries and they are a pain in the arse in general, but I can see it is 'part' of an overall solution that is needed, I just think they are not a Holy Grail of any sort.
Mind you, if I am allowed to have a big V8 as long as I also have an EV, then I'm in. Or maybe just get that big V8 and grown more vegetables?