How to Determine the Year of a Car by Its Glass?
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How to determine the year of a car by its glass? When inspecting a car, the date on the glass can generally be categorized into the following three types, along with certain special vehicle models: 1. Number + Dot Date Reading Method The number represents the year. If the dots are in front of the number, the date is in the first half of the year, and you subtract the number of dots from 7. If the dots are behind the number, the date is in the second half of the year, and you subtract the number of dots from 13. Example: The car's manufacturing date is October 2014, and the glass date is ····3. Calculation: Dots are in front, 3 represents 2013, and there are 4 dots before the 3. Subtract 3 from 7 to get 4. Production date: April 2013. 2. Number + Small Dots + Large Dots Date Reading Method The number represents the year. Small dots represent the quarter (maximum of 4, as there are 4 quarters in a year). Large dots represent the month within the quarter (maximum of 3). Example: The car's manufacturing date is November 2017, and the glass date is 7······. Calculation: The number 7 represents 2017, 4 small dots represent the fourth quarter, and the 2 large dots represent the second month of the quarter. Production date: November 2017. 3. First Line: Number + Small Dots, Second Line: Large Dots + Small Dots Date Reading Method The number represents the year of glass production. Small dots in the first line represent the month (minimum 1 dot, maximum 12 dots). The second line represents the days in the month, with large dots representing 10 days and small dots representing 1 day. Example: The car's manufacturing date is August 23, 2009, and the glass date is 9··········. Calculation: 9 represents 2009, 8 small dots in the first line represent August, 2 large dots in the second line represent 20 days, and 3 small dots represent 3 days. Production date: August 23, 2009. 4. BMW car glass is a bit special, as it does not have numbers or dates, only batch numbers. Determining the date of BMW glass requires experience.
