Halogens aren't auto-levelling (I think), but various legislations mean that OEM Xenons have to have self-levelling and cleaning.
I think that there was a suggestion somewhere that the rules for retrofits are somewhat more wooly and you can get away without these features.
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Gone: Fiesta - Focus - E46 320dSE - E91 330dMSport - E82 135iMSport - R55 JCW Clubman - M135i
Now: 530d
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