After 14 years (car was 4 years old when we bought it) I have decided to let go the E83. The wife got herself a Tesla and the X3 just can't compete. I left the X3 sitting on the driveway only to find out a huge sunroof leak which caused mold all over the interior. The battery drained and the wheel bearings (not the brake rotors) started to make noises. Sold it with 141,400 miles and a solid drivetrain: M54B30 engine + GM Tranny. Whoever buys this car will have a mechanically reliable car with shitty interior and electronics (radio volume knob does not work, sunroof cover is stuck in the back).
I no longer own a BMW car / SUV but I know one day I will come back because as we say in Spanish: men are the only animals who trip twice with the same stone.

I learned so much about cars with the X3. My Nissan SUV is boring, nothing breaks and is always reliable.

Good luck to y'all remaining X3 owners!