From day 1 ive noticed that my headlights sometimes mist up a little, especially after Ive washed it, or if its raining/damp. Just messing on the pooter at work and found a website called quirky 170.com (pertaining to Ford ST170s).
<A target=_blank href= "http://www.quirky170.com/issues.htmhttp://www.quirky170.com/issues.htm
Apparently this is a design flaw with all xenons and not those just fitted to 172s. This site is also worth a look as it just goes to show that all those problems I though related to french cars also relate to Fords!!!