We have had our Versa for two and a half years and other than regular maintenance we have not had to spend a dime on the car. After 40k miles the brakes are still almost like new and the car still runs great.
The Versa has consistently maintained 30+ mpg, considering that the most of our driving is in stop and go traffic I would say that is very good. In instances where we take longer trips with less stops we usually get 34 mpg or better.
When we purchased the Versa we compared it with the Fit, the Yaris and several other small hatch backs. There are other models that may be cheaper or get slightly better gas mileage, but considering all the variables the Versa wins hands down.
I am 6 feet tall and I am very comfortable in any seat in the car, and when I am in the drivers seat there is still plenty of room in the back seat for a passenger to sit comfortably.