How to Identify the Manufacturing Year of Car Glass?

[McLukas]

Carefully examine the trademark on the windshield (usually located in the lower left or right corner), where you'll find a string of characters. 1. For example, characters like ...13 indicate April 2013. The '13' represents the year 2013. The number of dots before the year is subtracted from 7 (7-3=4) to determine the month. 2. If it appears as 13..., this represents October 2013. The number of dots after the year is subtracted from 13 (13-3=10) to determine the month. Related knowledge: 1. Generally, OEM suppliers provide zero-inventory matched glass for complete vehicles, meaning the glass is fully matched by the supplier before the car rolls off the production line. Thus, the production dates of all glass on a vehicle are typically identical. 2. If they differ, it can be concluded that the glass was removed and reinstalled during assembly (indicating an issue), classifying it as a reworked vehicle. However, such rework doesn't necessarily imply quality problems—it might just be minor issues during production.