NHTSA complaint #11618601

Owner complaint summary

My subaru outback windshield seems to use low quality glass or have poor windshield mount/frame design. Since purchasing the car new in April 2022, I have had 3 significantly cracked windshields; all of which propagated immediately after getting hit by a pebble mid-drive (not giving any opportunity to fix the chip). I am filing this complaint because I don’t think it should be standard for a windshield to propagate a crack so easily and consistently every time it gets chipped (this seems statistically improbable compared to other cars) - and it’s a legitimate hazard to visibility if I don’t have ample opportunity to get the chip repaired to prevent it from propagating to a crack. Essentially I’m saying that it’s almost guaranteed that getting a chip will result in a foot long crack during the same drive (I say almost because I have been able to repair a chip before it was too late once). Furthermore, the crack will often double in size over night (presumably due to temperature changes) - which leads me to speculate that the windshield glass accumulated internal stresses during install due to poor design. I have only replaced my windshield through official Subaru dealerships with their recommended glass vendor. I’ve attached two photos from my most recent cracked windshield; the first is the crack that propagated immediately after the pebble hit while driving, and the second is after leaving the car overnight stationary. Also note that this is usually at highway speeds; and i have effectively had 1.5 broken windshields per year of driving the car. The first broken windshield happened at ~200 miles driven on the brand new car (5 days in).