Wow. Thats a lot of money for all 3.
I think that Kia has the Nu engine - which might be better than the Theta 2, but jury is still out? Does it have a security key? Might be expensive to insure, and either way its a lot for a Kia.
The Fusion depends on the engine. The EcoBoosts still were not cross-drilled then IIRC - so engine is suspect going forward. I would be hard pass on a Fusion at that price.
The Camry is best of the bunch, and assuming its the 4cyl 2AR, I think that is new enough to avoid the oil burn, but still - $18K for a 10 year old Camry?
Your in California with expensive gas. How long is your commute? Blasphemy here but there giving away Tesla's currently - at least in other parts of the country.
Otherwise I would say seek out some other options, those all seem overpriced based on my local market.