Dot Mark Testing
Dot Mark testing is the most common tell for checking glazing on a vehicle is legal, this page will break down what each individual mark means.
Many glasses with the E1 mark in circle are manufactured in Germany. China and Turkey use this kite mark and are not E.U. approved or tested. We have provided the legal list is at bottom of this page.
A legal piece of automotive glass must have marking shown to the side. This is silk printed in white or black and glass by law must carry marks shown at the side. Beware, some toughened glass only carries the first 5 listed.
- Glass manufacturer’s name - ours is Vidur on this glass
- E9 in circle is the country glass was made E9 is Spain
- 43R then number is the manufacturer’s licence number
- Glass marks must be visible to read clearly
- VGS mark so you can contact producer of glass
- Dot AS3 mark is for rest of world USA, Canada, etc.
- 15........ is the year glass was manufactured, this one is 2015!
An E.U. number on its own is not legal it must have all the first 4 markings to be legal.
In the E.U. the E code (with a capital ‘E’) is used for cars in European countries, and indicates the country that certified the windshield. It is a circle with the capital letter E followed by a number. The codes are assigned by the United Nations Economic Commission for Europe.