The cabin air filter or pollen filter, filters the air blown into the cabin area of your Smart. It is important the air blown into the cabin is cleaned of all sorts of particules including dirt, poisonous fumes, bacteria and pollen. Your Smart's pollen filter needs to be replaced about every 9300 to 12 400 miles.
In general replacing your Smart pollen filter is relatively easy. To find out which cabin filter you need for your Smart, please select the model and engine type of your car as well.