One problem related to engine and engine cooling has been reported for the 1998 Audi A4. The most recently reported issues are listed below.
The airbag fault light and abs light have been on ever since I had the vehicle, thinking that it may be a fault by the manufacturer as seeing very common problems in many websites. Another main concerned is the fault of the manufacturer's engine design causing engine damage from oil sludge. My concern is for future prevention measures.