200Wh is about a 20% estimation-factor on top of the commonly claimed 160Wh/km for a tesla. This accounts for any losses from charger to battery. Losses past that point are irrelevant because the point of measurement is battery drain per km. Differences between the test protocol and real world should be mirrored in the econobox stats. Emissions figures were commonly quoted per kWh at the wall socket.
> Not at all. By your (very optimistic) calculations, they are about the same. You'll never pay off the CO2 debt of manufacturing the EV battery, let alone start averting the climate catastrophe!
Precisely my point? I'm asserting that a city-car econobox has better marginal per km emissions than a luxury sports EV. A cayanne will have about 4-6x the emissions as the econobox and that comparison will favour the tesla. Also please do point out where they were optimistic -- there are very few ICEs that get 50g/km?
EV makers play sleight of hand by eliminating the segment of small light cars that can get you two cities over, then claiming their replacement in the form of a luxury performance car is 'better' by comparing it to luxury performance SUVs.
> Not at all. By your (very optimistic) calculations, they are about the same. You'll never pay off the CO2 debt of manufacturing the EV battery, let alone start averting the climate catastrophe!
This isn't as much as you think, most of the industry isn't using NMC anymore and there's less of the expensive materials per cell even compared to earlier LFP variants. If you're not insisting on obscene power densities and range you'll never use then 30kWh of LFP batteries has GHG impact commensurable with a few thousand km of usage of either the econobox or the coal powered luxury EV -- it doesn't take much to tip the balance. Similarly you can use motors without scarce metals.
> Very true. Weird that all of the currently-pushed solutions involve large and expensive EVs that barely do any good.
Because EVs are here to save the car industry not the planet. Although they do have one positive externality: a bunch of people willing to pay $500-1000/kWh allowed for the development of the battery industry where doing it to reduce emissions would have never happened.