My uncle bought a PROBOX. I saw it from inside on the weekend. The leg room is quite limited at the front seat. The 2nd row seat is very very uncomfortable at almost a 90 degree angle, one will be unable to sit comfortably on shorter drives - let alone longer ones. Also, it only has power window at the driver side - all the remaining 3 doors have manual window. I did not like the car even though I was very excited to see it earlier.
However, my uncle took the car to murree from Karachi and he said the fuel consumption was impressive, drive and road grip of the car was also good.