Should I trade-in my '15 Camry XSE for a '16 Scion iA to save money? (CA)

I owe ~$16,000 for the Camry XSE 4cyl all options. It has 14k miles. I got a Carmax Appraisal for $18,000.

I'm looking to save money and still have a newer car with better gas mileage and the iA looks to fit the bill.

Would I be really saving that much money if I sell the Camry and get a CPO '16 iA 11k miles for $14,800 OTD?

or is the mpg cost savings really not worth the comfort and features I give up in the XSE?