Continuity mistake: When Pleakley is tipped out of the chest, he is accompanied by lots of Lilo's toys. When Stitch activates the pod, the toys have vanished from the floor around Lilo and Pleakley's feet. (00:15:15)
Other mistake: At the end of the movie when some of the pods are being activated, there are two orange ones with the same number.
Continuity mistake: When the container of experiments explodes, 2 balls marked '311' float past. (00:43:45)
Continuity mistake: When Nani leaves, there is one of Lilo's drawings pinned to the bookcase next to the door (a face). When the "pizza" arrives, there are two (a person and a plant). (00:07:15 - 00:08:05)
Continuity mistake: When Hamsterviel walks away from Lilo, the bottom book of the pile he was standing on rotates and changes colour. (00:40:00)
Continuity mistake: When Gantu peers in through the window, the plant and box that used to be on the windowsill have vanished. (00:07:15 - 00:09:05)
Continuity mistake: When Hamsterviel first stands on the pile of books to reach Jumba, it is 19 books higher. Later on, when Jumba is talking on the phone, it is only 13 books high. (00:24:35 - 00:29:50)
Continuity mistake: After the beach buggy crashes, Jumba's seatbelt disappears. (00:03:10)
Continuity mistake: The colour of one of the locks on the chest changes from black to red. (00:19:00)
Plot hole: When 625 is activated, he has nothing with him, so how does he make all those sandwiches out of nothing?
Continuity mistake: The direction in which the lighthouse light rotates changes. When it first is powered up it rotates anti-clockwise. As the film's end credits start it is rotating clockwise (as viewed from above). (00:54:40 - 00:57:30)
Continuity mistake: When looking for experiment 221 in the woods, the 2nd rock that Stitch looks under appears from nowhere. (00:23:25)
Continuity mistake: When Nani hands over the cooler and the rest of the stuff, the red umbrella turns itself around. (00:03:00)
Continuity mistake: As Pleakley is cooking, David's t-shirt acquires a red logo. (00:06:30)