Do Xenon lights require automatic levelling? Further to recent emails concerning beam adjustment and bi-xenon lights, my factory fitted lights have washers and automatic levelling that I read is required under motoring law. All retro fitted kits don't seem to point this out when selling them, is it a failure point under the MoT? It is difficult to see how self-levelling could be fitted to those cars without replacing the whole headlamp unit. I only ever get dazzled by Xenons from cars that seem not to have the self-levelling facility. I have never been flashed by other drivers approaching me. A manual knob is not sufficient, up and over hills are not adjusted immediately, and I don't see how self-levelling can help when going over the brow of a hill. I will say that the extra illumination on kerbless country roads by the beam shape is invaluable. But automatic self-adjustors don't work very well. They are usually too slow on an undulating road and often fail completely.

NH, Old Windsor