One problem related to engine knocking noise has been reported for the 2002 Volkswagen Passat. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Volkswagen Passat based on all problems reported for the 2002 Passat.
Check engine light appeared on the dashboard while driving about 45 mph on the highway vehicle was inspected by a mechanic, who stated that oil was a quart low. The mechanic added a quart of oil. The light was still on the dashboard. The next day the vehicle had a knocking noise coming from underneath the vehicle.