One problem related to front seat belt buckle assembly has been reported for the 1999 Audi A6. The most recently reported issues are listed below.
Design of female part of seat belt buckle on driver's side and passenger's side is down too far, which may discourage the occupants from using the seat belts. The seat belts are very difficult to fasten, especially on the passenger's side. Consumer claims poorly designed seat belt, and believes that manufacturer could install an adopter to solve problem.