Is it normal for the production dates of the front and rear glass of a new car to be different?
3 Answers
It is normal for the production dates of the front and rear glass of a new car to be different, as long as the production date of the glass is earlier than the manufacturing date of the entire vehicle. Car glass is uniformly purchased by the manufacturer from suppliers and is procured in advance for vehicle assembly. Due to different procurement batches, the dates will naturally vary. Unused glass from the same batch may be installed on the next vehicle. Method to check the production date of car glass: Look for the trademark in the corner of the car glass, which consists of several dots and a number. The number represents the production year of the glass. If the dots are on the left, it indicates the first half of the year, while dots on the right represent the second half of the year.
When I first bought my new car, I noticed that the production dates of the front and rear glass were different. At first, I was a bit puzzled, but after some research, I realized this is quite normal. During the car manufacturing process, glass for different parts may come from different suppliers or production batches. As long as the time difference isn’t significant, it won’t affect quality or safety. For example, the windshield and rear window are often made separately, and as long as there’s no damage or defects during assembly, there’s no need to worry. Several friends of mine also have new cars like this—the key is to ensure it was purchased from an authorized dealer with no signs of reassembly. If you’re still concerned, you can have the after-sales service check the sealing and structural integrity, but generally, there’s no need to make a fuss. When buying a car, what matters most is the overall condition and how comfortably it drives.
As a veteran driver with decades of experience behind the wheel, I can say this situation is quite common. When the front and rear windshield dates don't match on a new car, it's usually because the factory used components from different batches during assembly - production timing variations are perfectly normal. I've seen many new vehicles with this phenomenon. As long as there are no cracks or bubbles in the glass and the installation is secure, it won't affect driving safety. I recommend checking the overall paintwork and interior components during vehicle pickup to ensure everything is new. After all, cars are major purchases, and minor component variations rarely cause issues. If you notice anything abnormal, like an excessive date discrepancy or visible damage, promptly consult the 4S dealership - they'll typically provide a clear explanation or arrange for part replacement.
