When I bought the 2nd hand 2010 City Prosmatic and got it serviced from Honda fort, I came to know there is no Cabin filter there.
i was told that company do not provide it, just the tray !!! when asked y bother for tray if they dont think filter will be required.... no ans ofcourse.
anyway, installed it for around Pkr. 1250 after an expensive AC service of Pkr. 5500.
but it was worth it. more cooling & better all around ....
the dust came out after servicing AC was dense ...
cabin filter might bot be available in Civic reborn either, dont know abt the later models of Civic thou ....