I would like to hear from other members about their experience with the headlight glass. I had 6 cars in the past 11 years, all with glass headlights, and never had a broken one. In my 1.5 years with the Volvo I replaced two shattered headlight lenses. I never noticed when this happened (i.e. I did not hit anything), both times it looked like a rock (or a bolt that I found inside the headlight) hit the glass, probably on a highway. Is this a coincidence, or there is something about Volvo glass or design that makes it more vulnerable?

Replacement is easy and quick, but twice in 18 months, at $90 each - seems excessive.
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'95 Volvo 850 GLT, 93K, all stock