I've had mine replaced. It is a special glass for the HUD, it will be blurry without it. Mine chipped with one month of getting the car, I have glass coverage on my insurance but they wanted to install an aftermarket windshield because I didn't have OEM replacement part coverage! I told them no way and you will replace it with an oem one, I had to split the difference (90 bucks) between the two. I think the price was around 600 bucks.
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