I recall the 11 fiesta had this as an option on top range models. I did not dig deeply when I ordered my ST.I think all ST and Titanium Fiesta should have filtered cabin air as standard. I have seen no discussion of this feature.
It does and it is. I replaced the cabin filter on both of my Fiestas this summer and it is still a 30-45 minute contortion exercise. I follow the Fiesta Faction forum's excellent DIY post.
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