While sitting stationary in the driveway, with only 4,500 miles on the vehicle, on the morning of 6/4/20 I noticed a large crack had appeared across the windshield. The crack originated at the top edge of the windshield (edge crack consistent with weak or substandard quality glass) approximately 52 cm from right side and 61.5 cm from left side, traveling downward approximately 12 cm before entering a sweeping curve to the right and continuing for another 35 cm. The total length of the crack is currently approximately 55 cm. There is no "starburst or star" pattern along any part of the crack indicating that the crack formed without impact from foreign material.

At no time during any trips were there any noises heard consistent with a foreign object striking the windshield. I am the only person that drives the vehicle.

I brought the vehicle to the dealer and the service department insisted that the crack was caused by a foreign object striking the windshield, I informed them it had been parked in the driveway and had not encountered any "road hazards" while in the driveway. They then stated it was caused by rocks flying through the air. I informed them I do not live in an asteroid belt.

They have refused to honor the manufacturers warranty and insisted I pay for the correction. Toyota has a history of having defective windshields as documented in the following class action court case https://www.courthousenews.com/wp-content/uploads/2018/03/Toyota.CA_.pdf

Keep an eye out here as I may start another Class Action Law Suit if I can not get an appropriate response from the dealer or Toyota. If you have a Toyota and a similar crack formed in the windshield, please contact me so I can give you information to join the class action suit. We should not have to file suit to get Toyota to replace manufacturers defects, but the reality is we may have to as they refuse to correct the problem based on honor and integrity.

‎References: https://physics.aps.org/story/v11/st9#:~:text=Brittle%20materials%20like%20glass%20can,tips%20and%20smooth%20fracture%20surfaces. https://physics.aps.org/articles/v6/48 https://physicsworld.com/a/glass-obeys-a-cracking-good-law/ https://www.sciencedaily.com/releases/2017/10/171031111457.htm https://www.a1-windscreens.co.uk/news/types-of-windscreen-cracks-chips/ https://medium.com/@windshieldexperts123/types-of-chips-and-cracks-that-can-damage-your-cars-windshield-6f85b7ec658e https://www.krygerglass.com/common-types-of-windshield-damage/ https://www.chrforums.uk/viewtopic.php?t=508 https://physics.stackexchange.com/questions/264264/crack-pattern-of-safety-glass-what-gives-rise-to-spider-web-like-shape https://www.courthousenews.com/wp-content/uploads/2018/03/Toyota.CA_.pdf ‎

We have had multiple rocks crack our windshield. We had the first one repaired, the second one the windshield had to be replaced, and we just had the 3rd repair done today. Having a small rock break your windshield is a once in a blue moon type of thing. We've only owned this car a year and a half and have had 3 windshield incidents so I googled the subject and found that the biggest complaint for the 2018 model was windshield cracks. I don't think the problem is limited to 2018. Don't know if it is the angle of the glass or the quality of glass.