The headlights on my 07 Coupe still look close to factory new. Both are clear and "fog-free". I do polish the lens covers (front & back) every 6 months. I typically use a cleaner/polish product - either Meguiar's "PlastX" or Blue Magic's "Headlight Lens Restorer". Both have given me good results.

In fact, Meguiar's PlastX is what I use on the plastic windows of my 1995 Jeep Wrangler Rio Grande. It always gives excellent results in keeping them "fog-free".

Later,