Condensation in the heater case may cause a musty odor from the heating, ventilation and AC (HVAC) system after sitting for two hours or more. Our technicians tell us that a cleaner is available for the heater case and the drain system should be checked for debris.Google+
Car Problem Reports
Volkswagen GTI Odor from HVAC vents
Volkswagen GTI Problem
Average Mileage: 48,600 mi (30,000 mi - 82,000 mi)
Visitor, 2010 Volkswagen GTI, 30,000 mi
Musty odor Clifton ventilation. Reported it to Bozzani VW, and they stated that they would look into it. Hasn't been resolved.