LEDS offer alot of benefits. However the cost is astronomical, and will be for at least another 2 model generations in BMW.
Look at this way:
halogens currently are the best. They are not wanted by car thieves, they are cheap to replace (bulb or assembly), they dont have adaptive hardware that can fail, they are easy to replace (dont have to be too careful when handling).
Xenons 2nd best. They are wanted by car thieves but not as the new LED tech, they arent really cheap to replace compared to LEDs, they are easy to replace compared to LED
LED worst option: They are in great demand by the number of thefts, they are NOOOOOOTTT CHEAP to buy or replace.
BMW offers Halogens for all 3 and below vehicles. Until thhat becomes standard xenons, the price of LED aint gonna be reduced.
BMW and Mercedes Build Beta Products!
Lexus build Release Candidate Products!
Why does this matter?
CAUSE EVERY TIME someone says Lexus has better build quality, one should consider what Toyota their Lexus Engine and chassis platform comes out of and how long that part has been tested in the real world!