How to Check the Vehicle Production Date from the Car Glass?

[DiStephanie]

To check the vehicle production date from the car glass, look for numbers with black dots on the glass, which indicate the month and year of production—the numbers represent the year. Car glass is manufactured by heating the glass in a furnace to near its softening temperature, then rapidly transferring it to cooling zones with varying intensities to create uneven cooling, resulting in different stress levels between the main viewing area and the surrounding zones. The production date serves several purposes: 1. It is used for depreciation valuation when purchasing auto insurance; 2. It helps determine if a new car is from old stock; 3. It identifies vehicles affected by safety recalls; 4. It determines the model year, which affects configurations and part numbers.