Mine has headlamp washers.
Think there are some new rules about them whereby if the headlight puts out over a certain amount of lumens (2000 rings a bell...) then washers have to be present, but below that the manufacturer can save some dosh. That's why the LED headlights on the Leon aren't very bright compared to xenons. Some manufacturers are also fitting 25W xenons that fit the same bracket as the lower power LEDs we have. Something like an Audi A6 with LEDs will still need washers coz they're much brighter than the Leon or A3's.
This is the info you were thinking of, courtesy of the AA.
Headlight requirements are updated to take account of the particular characteristics of High Intensity Discharge (HID) lamps.
HID headlights can cause dazzle if they are dirty or aimed too high, so they are generally (if light output exceeds 2000 lumens) fitted in conjunction with headlamp cleaning and levelling systems. Where HID or LED dipped beam headlamps are fitted the tester will switch on the headlamps and check the operation of any headlamp levelling and cleaning devices fitted.
The car will fail if a headlamp levelling or cleaning device is inoperative or otherwise obviously defective.
End of quote.
However, the key words 'generally are fitted', there is no requirement to fit washers or levellers, although I hate after market HID's without levellers. If you have them they must work.
So with the Leon, the washers appear to have nothing to do with the headlamps, otherwise they would form part of the LED headlight pack. They are there as a winter option for cleaning your headlights in those lovely wet and dirty driving conditions.
So it looks like only half a winter pack was supplied.
