Have only done 500 miles to date and not done a full tank to empty but will report back in about a month or so.
The instruments show the battery regenerating a bit when using the braking foot pedal.
But *seems* to regen more (moving the gauge further into the green zone) when using the regen alone. You control how severe the regen braking effect is via the paddles and at maximum the effect is strong.
Car history:
BMW X2 xdrive20i 2020
Mini clubman cooper s
Austin Allegro