2022 BMW X6 LANE DEPARTURE,BACK OVER PREVENTION

The rear sensor system design on the X6 does not work as described and the complaint was acknowledged by our BMW dealer “with nothing they can do”. When backing up out of a parking space, it does not alert for persons walking or driving by behind you unless they are only inches away. This has caused personal conflicts with persons walking who thought we should have stopped. And, we nearly had a horrible accident when changing lanes at freeway speeds in front of a semi - a pickup cut us off by jumping in our blind spot and no alert was received. Had I not finally seen him and took evasive action, we would have collided in front of the semi. I have seen similar unsatisfied owner complaints on the forums and there are likely other similar reports here. Thank you. We are selling this vehicle to get something safer.