What could be wrong if your car smells very musty but you cannot find any leak and the carpets are not wet?

Answer

if your vehicle has air conditioning the smell could be caused by build up of bacteria on the heater matrix and in the vents, as this bacteria decays it causes a smell inside the cabin, this can be resolved by purchasing air specialist air con cleaner the is sprayed into the sir vents. the smell can also be caused by the heating of leaking coolant from the heater matrix, this would also combined with the car steaming up, check the coolant level to see if it has dropped.

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answer can also be caused by moisture getting into carpets etc, in the winter months, like snow on your shoes or just water. this will fet into under felt under carpet. a good airing out in a warm garage or a nice sunny day wit all windows and oors open will generally fix this

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