How often do you change your pollen filters?

6 mos to a year....

Generally speaking MB includes it as part of every lettered service. It's also helpful to add your vehicle to your profile or your sig so people don't have to guess when you're asking a tech question.

I own a late W124 with the filters, I replace them every year (2 till date) - the first ones I removed were black as sin and packed flat with dirt/leaves etc. They had MB part no. on them and were manufactured by Micron air.

The ones I put in are also micron air but not OE.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)