Hi there. I have had exactly the same issue with 2021 X30E and firstly BMW were absolutely awful ( same as you with denying and getting out of doing anything) then when I went to main dealer all they wanted was money (£1,200) as per your experience. Found a brilliant EV specialist who after full fault identification replaced 2 cells ( £3,600 still hurting) but less than £16,000 BMW main dealer quoted….ive had BMWs for 30 years, not any more, cars are built to a cost, bmw themselves are disgustingly dismissive and the main dealers just try get money from you, no interest in helping. It’s a shame….
