Foggy headlights are a safety issue, but don’t replace them. That could cost you hundred’s of dollars. Restore them instead. The headlight lens is made of a plastic that oxidizes over time because of the harsh elements we face in Texas. When it oxidizes it turns foggy, yellow and crusty causing the light pass through to be diminished. There is actually a clear protective coating the manufacturer applies to protect them, for a while anyway. We recondition the plastic and apply new coating at a fraction of a cost of buying new ones. Be careful though, some vendors don’t apply the coating and the lens are worse than before within a matter of weeks. Look at the difference. This is how I give a one year guarantee.