EVERY post that has anything to do with charging, regen, battery should include information on battery version (FWD or AWD) and temperature.
Agreed!
I'd always understood that regenerative braking was one of the key's to an EV or hybrid's efficiency, at least during around town driving. I just can't help but think that the fact that it doesn't seem to work properly on our vehicles—and usually just throws error messages when activated—might go a long way towards explaining their otherwise inexplicable poor efficiency.
Supposedly, these vehicles are capable of attaining sustained efficiency of 3.7-4.5+ miles/kWh—that's the only way they could possibly achieve their range claims (as per either EPA or WLTP ratings), and explain its best in class MPGe rating (i.e., vs. Ioniq 5, Mach-E, ID.4).
Considering that the BZ4X is also lighter in weight than some of its competition (Mach-E, ID.4 AWD), and has best in class aerodynamics (0.26 drag coefficient), it's low efficiency is similarly confounding. I thought this was the promise of its smaller battery relative to competitors—that it would still be competitive in its class, as far as range, due to its very high efficiency.
If the regeneration boost is this finicky and doesn't seem to stay on, it makes me question whether the standard/non-boosted blended brake pedal regeneration is working properly either, i.e., if there's even minimal recharge occurring with the 'boost' off. You can of course see energy supposedly being added to the battery on the dash display whenever you brake, even with regen boost off, but who knows if its actually occurring.
I think what we're up against is that Toyota wants absolutely minimal battery degradation, which is a noble goal, but that this goal is butting up against the vehicle's actual usability, i.e., as per charging speeds and range.