What is the reason for two rows of dots appearing on the Lavida's glass date?
2 Answers
Generally, the production date on the vehicle's glass is indicated by a number followed by black dots. The dots in front of the number are subtracted from 7, and those behind are subtracted from 13, which corresponds to the production date. Below is relevant information: 1. Body dimensions: The length, width, and height are 4605mm, 1765mm, and 1460mm respectively, with a wheelbase of 2610mm. 2. Color scheme: The Lavida inherits the traditional 'dark top and light bottom' color combination of Volkswagen models in China. However, referencing the design style of Japanese mid-size cars, a wooden trim that integrates with the center console is added between the two.
The other day when I was washing my Lavida, I also noticed two rows of small black dots in the corners of the windows. After some research, I learned that these are markings left by the production process. When glass factories bake laminated glass, they fuse a layer of material called ceramic glaze at the edges under high temperatures, much like firing ceramic ware. These dots are traces of ink that didn’t fully melt, helping the glass heat evenly and preventing edge cracks during summer heat exposure. I specifically asked the technicians at the 4S店, and they said this design is common in German cars, especially Volkswagen and Audi models. Some people mistake them for film bubbles or glass cracks, but they actually require no treatment. In fact, the dot patterns can help identify the glass production date—for example, my car’s dot matrix ‘••• ••••’ indicates it was produced in the 4th week of 2023.
