I have a feeling that half the reason they're doing this is that they don't have a good idea how to increase energy efficiency.

Case in point:

2026 BMW i3 - 900km WLTP from a 108kWh battery.

2026 Denza Z9 GT - 800km WLTP from a 122kWh pack.

The former charges at a maximum of 400kW, while the latter at over twice that which saves... about 10 minutes at the charger after 450km of driving(12 vs 22 minutes approx).

Many such examples with Chinese manufacturers putting 700kg battery packs into the vehicles just to be able to say it's this and that kWh.

I don't know about anyone here but after 400km or so I'm done and want to at least stretch my legs.

This is an NMC vs LFP battery comparison.

They have different trade-offs but LFP is gradually taking over from the bottom of the market and heading up market in a classic disruptive manner.

They are heavier but cheaper and safer and better longevity.