Q I don’t know if you’ve already discussed replacement costs for Toyota Prius headlights, but . . . Steve Armstrong San Jose A Oh, we certainly are today. Q We are a two-Prius family. Both cars have ...

A car's headlights grow yellow or cloudy over time due to the breakdown of the protective layer on the lens. That contamination can cause your headlights to be dimmer—and therefore less safe. One way ...