
4S store replaced glass is original. Relevant information about automotive glass is as follows: Development history: When motor vehicles became more common and their speed increased, wind and small debris hitting the driver's face became an increasingly serious problem. To reduce this trouble, manufacturers added a piece of glass to the vehicle, literally called a windshield. The new windshield made drivers more comfortable, but it was still not enough to resist flying small debris. These initial windshields were manually cut from flat glass. Unfortunately, when the glass broke, the flat glass would shatter into large, dangerous, sharp fragments, which did not seem to possess the satisfactory qualities of a windshield. Tempered glass: Another type of safety glass, widely used in modern cars for side and rear windows. Compared to laminated glass, tempered glass increases strength through heating and pressurization. When damaged, it shatters into smooth, small particles resembling breadcrumbs, thereby reducing the possibility of injury from glass fragments.

As an enthusiast who frequently tinkers with cars, I believe the glass replaced at 4S shops is basically OEM (Original Equipment Manufacturer) since they are directly authorized by the automakers and supply genuine parts, ensuring quality and original matching to avoid later issues like water leakage or cracks. If non-OEM glass is used, incorrect installation angles may affect the deployment position of airbags, posing a threat to driving safety. To identify OEM glass, you can check the coding marks on the glass, similar to a vehicle identification number. If you have doubts, simply ask the 4S shop staff to show the purchase order or warranty certificate—they are usually happy to provide proof. The reason for choosing a 4S shop is peace of mind, though the price is slightly higher. I recommend not opting for cheaper alternatives—safety should always come first, as glass directly affects visibility and potential control hazards.

From my car repair experience, the glass replaced at 4S shops is mostly genuine OEM parts since they have direct partnerships with manufacturers, ensuring authenticity. However, I've heard isolated cases where substandard equivalents were used. If owners aren't careful, new glass might fog up quickly or generate excessive noise. It's best to specify "OEM glass" in the contract before replacement for peace of mind regarding after-sales service. Price-wise, insurance usually covers part of the cost, but out-of-pocket expenses can be higher. I also recommend test-driving after replacement to check sealing—tap around to listen for abnormal sounds, as driving with air leaks can be extremely annoying. While glass might seem minor, its long-term impact matters, so extra attention never hurts.

Personally, I feel that most 4S shops use original factory glass, as they rely on this reputation to attract customers. For example, windshields must fit perfectly to prevent explosions. When replacing glass, they use professional tools for installation, ensuring fast and effective results. Non-4S shops may be cheaper but lack attention to detail. It's advisable to ask, 'Is it directly supplied by the manufacturer?' to feel more assured. Regularly maintain and inspect the sealing around the glass edges to extend its lifespan.


