You cannot get an MOT failure from fitting HID kits in bi-xenon lights. Self adjusters and washers are only mandatory for a car which left the factory with xenon's.
Sent from my Nexus 6 using Tapatalk
Whaaattt!!! Yes you can fail, for several reasons.
1. No aftermarket Hx connector HID kit has e-approval. That is first mandatory requirement for MOT pass and is EU wide legislation. You can only use either D2x, D1x or D3x HID bulbs which means the whole headlight assembly needs to be compliant.
2. Automatic headlight adjustment and washers ARE MANDATORY TO ALL CARS WITH HID OR LED LIGHTS WHICH HAVE MORE THAN 2000 LUMENS AND ARE MANUFACTURED AFTER 2001. No exceptions here, again EU legislation.
Read here, this is for UK :
http://webarchive.nationalarchives.gov.uk/20120606172804/http:/assets.dft.gov.uk/publications/dft-information-sheets/aftermarket-hid-headlamps.pdfUK cannot deviate from EU legislation on road safety issues, they must comply.
So only option to get legal HID lights is to retrofit compliant headlight assemblies, automatic self-levelling (either with sensors or automatic suspension) and washers. All other options are illegal for road use. There's no debate about this, it's regulated by law.
If you install 20w HID kit which will stay under the 2000 lumen boundary, then you don't need self-levelling nor washers. But you still need correct bulb type. Means D1x, D2x, D3x or D4x. No Hx bulb will be compliant as no e-approval on them.