It will be hard for me to choose my next perfect car. Reliability history will be a main point. I now fear all the technology, all the electronics in car, that's what makes them not reliable for the most part. I remember my 2007 Focus, it had no ABS and traction control. It was simple. Now cars have a bunch of sensors and computers.
Perfect is a word that's individual user defined and will differ for everyone. It's about your wants and needs, and ranking them appropriately. The perfect car for yourself has all of your needs, and as many of your wants as possible. If you can't adequately define what's a want or a need, then you'll never truly be able to pick what you feel like is the perfect car.