Why is there no filter for AC seats in your search engine?

Cargurus has been removing filters over the years, not adding. I don't even think there is one for interior color. I don't think they will add one for ventilated seats. But you never know, just email them at, user_support@cargurus.com to see if they can. But of course, filters are only as good as what the dealers or sellers actually place in the ad.

The problem is sellers never accurately fill out all the data. If you have a thousand items to check when filling out an ad the information will not be reliable.