Defect Reports are submitted directly to the National Highway Transportation Safety Board by owners, dealers and independent repair shops.  They represent events that occurred and may or may not be acknowledged as vehicle problems by the manufacturer. Click on the links below to see the summary list for the C4 year of interest.

1984 1985 1986 1987
1988 1989 1990 1991
1992 1993 1994 1995



You may also wish to consult the Service Bulletin database for additional technical information. Service Bulletins are issued by the manufacturer and cover known problems or procedural issues.