One problem related to side/rear glass has been reported for the 1998 Volkswagen Beetle. The most recently reported issues are listed below.
The rear window or rear hatch glass is severlydefected such that viewing through the rear view mirror or directly through the glass is substantially impaired. The defect creates a terrible danger on rainy nights when it is impossible to view through the window trafic as it approaches because the glass is deformed in such a way that it blurrs the headlights and or environment lights such as; street lights. You are unable to judge whether the other car is going to pass or will be able to stop in time to prevent a collision.