The Euro manual recommends replacement of the dust and pollen filter every 30,000kms or 12 months.
Now I can be fairly confident that Honda dealers I have been to didn't change mine as part of scheduled servicing. I say this as I just pulled mine out and it has plenty of crap in there (separate the channels).
I can't be bothered changing it now (how much are these?) - just vacuumed out all the crap.
Anyway - thought I would let you know - as Honda dealers don't appear to follow the schedule for replacing these.
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