I have an ’08 M45X.
I’m not in love with the front end styling but it’s not
THAT bad!
The front headlights have both a low-beam bulb assembly and a high-beam bulb assembly; both are Xenon bulbs. The M45 also has the adaptive headlight system and the low-beam assembly only turns with the vehicle (and it’s pretty darn quick).
Keep in mind that the current generation M is nearing the end of its lifecycle – I suspect we’ll see some significant changes in the front lighting system when the replacement comes on board.