There are other options for headlight upgrades, you can get LED bulbs which give a brighter, whiter light than halogens.
I replaced the halogen bulbs on my A4 with LED bulbs, the car did not have washers and it passed it's MOT twice with them fitted whilst I owned the car. You would need to check that the car does not do cold diagnosis on these bulbs first though, if it does then you would risk other cars thinking you are flashing them to let them out or something, could be dangerous.
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