Corrected entry: Stuart is a resident of the orphanage, but he doesn't wear the same uniform/clothes as the other children living there.
Corrected entry: When George first shows Stuart the toy car, he is driving it by remote. Throughout the rest of the movie Stuart can drive it like a real car (without the use of a remote).
Corrected entry: When they are in the toy store, Stuart tries on a "Ben" suit that has a hole for his tail. How did the hole get there? I don't think pants are generally manufactured with holes in the bum area.
Corrected entry: When stuart is in the washing machine it completely fills up to the top - washing machines only fill up with water 1-3 inches high. When the mother goes to open the door and get him out it opens straight away. This isn't possible, washing machines never open during a cycle.