Passat B5 turns on the warm air, and the garbage in the car smells bad.

How long has the air conditioner filter been replaced? At most 10000 km, it must be changed, otherwise it is easy to get moldy and smell.

Go to a professional beauty shop to clean the air conditioning pipeline system, otherwise the moldy pipeline will easily cause respiratory diseases.

Supplement: The air-conditioning filter element is located in front of the passenger side of the engine compartment, which costs more than 60 yuan.

The smell of engine oil seems to be something wrong with the engine. If it is a manual transmission,

And I feel that the power is declining, or there may be something wrong with the clutch plate.

I suggest you go to 4S to check it quickly.