Is it a problem if the production dates of the new car's glass are different?
2 Answers
It is normal for the production dates of car glass to be different. The vehicle assembly plant is a manufacturing facility where parts suppliers deliver components to its warehouse in advance. It is impossible to ensure that every part is immediately assembled, and sometimes additional parts may be prepared as a normal practice, leading to time discrepancies. Glass is produced on a continuous production line, which generally cannot be stopped. Different batches of glass will have different production dates. Installing glass with different production dates on the same vehicle does not indicate any underlying issues with the car. Since car glass cannot be perfectly identical, this inconsistency is not directly related to any problems with the vehicle itself. If there are quality issues with the glass, such as cracking, the differing production dates can serve as valid evidence of glass quality. However, this does not prove any issues with the car itself, and the vehicle warranty is based on the sales date of the car. Typically, the production date of the vehicle is indicated on the door nameplate on the passenger side.
Having worked in an automobile manufacturing plant for many years, it's completely normal for the production dates of new car windows to differ, as glass components during vehicle assembly come from different batches or suppliers, all of which undergo rigorous quality inspections. Window dates are typically indicated by small black dots or numbers—for example, dots preceding a numeral represent month codes, while the digits denote the last two digits of the year. A discrepancy of a month or two is no cause for concern. As long as all windows are intact and properly installed, there will be no impact on sealing or structural integrity, ensuring driving safety remains uncompromised. However, be wary of date discrepancies exceeding six months, as this may indicate a refurbished accident vehicle. It's advisable to meticulously verify consistency upon delivery and request factory certification documents. Nowadays, most brands adopt multi-point supply chains, which actually enhances production efficiency—car owners need not fret unnecessarily.
