Continuity mistake: In the final scene where Miss Miller is sitting next to Theodore adjusting her hair in the car's busted rear-view mirror, the shot changes to Dave opening the passenger's side door. But as he steps in, Miss Miller skids away and Theodore can now be seen sitting with the other Chipmunks and Chipettes in the back seat. (01:11:30)
Plot hole: The Chipettes save The Chipmunks in Fiji from the natives despite the fact that The Chipmunks Balloon is still intact, so couldn't The Chipettes just send them back to their Balloon instead?
Continuity mistake: In the airport terminal where Dave shows his passport to customs, he wears a pink-sleeved shirt. One shot later he's got a light blue shirt and a dark blue jacket instead. (01:07:40)
Continuity mistake: When Claudia threatens to hurt Miss Miller if the dolls aren't handed over in a timely fashion, Jeannette can be seen standing in two different places from one shot to the next. (01:07:35)
Continuity mistake: During a flashback scene where the mama penguin tucks her baby into bed, the blanket edge keeps changing color. Depending on the shot, it's either purple or white. (00:55:15)
Continuity mistake: As the Chipettes drift into Egyptian territory, their hot air balloon is seized by a guard's grappling hook. At first two of its hooks are lodged into the balloon's basket, but a few seconds later three hooks are lodged there instead. (00:40:40)
Continuity mistake: On their way to the Parthenon, the Chipmunks knock down a fruit vendor's tent. When Dave appears from beneath the sheet a second later we can see how one of the tent's support poles is broken in half, but in the previous shot none of the poles were even close to being damaged as they toppled over. (00:34:40)
Continuity mistake: When Sisman gets carried off by a shark, the Theodore doll he was holding a moment ago switches to a Jeannette doll on its way to the ocean floor. (00:27:05)
Continuity mistake: In Mexico where Simon instructs Alvin and Theodore to drop their first doll at the Cluck 'n' Taco, the color of Simon's notepad changes from pink to white. (00:20:40)
Continuity mistake: Just before the hot air balloons lift off, Klaus waves a flag to prepare the opposing teams. The ball on top of his flag changes from black to red. (00:15:25)
Continuity mistake: As Theodore asks Simon a question about the arcade game, Simon's left hand jumps from his chin to side between frames. (00:04:40)
Continuity mistake: In Mexico, a man tells Alvin, Simon and Theodore about the annual fiesta. Initially he's standing up, but then he crouches down to their level between shots. (00:21:45)
Continuity mistake: When Eleanor tries keeping Jeannette away from the cooler, a wooden crate beneath her changes design between shots. (00:52:45)
Continuity mistake: After the Chipmunks land their balloon in Mexico, Alvin jumps onto the grass and starts looking around. Between shots, Alvin's head faces one direction and then the other - first facing the scenery, then Simon. (00:20:30)
Continuity mistake: After being pulled from the water and placed on a pier, Brittany gets annoyed with Eleanor and the Theodore doll. Between shots, Brittany's position changes - rotating away from Eleanor all of a sudden. (00:27:55)
Continuity mistake: Seconds before Klaus and Claudia introduce themselves in the café, Brittany shouts at Alvin and then places her left hand at her side. But in the next shot her left hand is extended in Alvin's direction and she's standing in a different location on the floor tiles as well. (00:07:45)
Continuity mistake: At the airport, Dave notices what appears to be Alvin's red cap lying on the sidewalk, so he reaches out to pick it up with his left hand. But between shots, the cap instantly changes hands. (01:08:00)
Audio problem: When the Chipmunks and Chipettes escape from Klaus and Claudia via the luggage chute, Claudia shouts "Come back here" yet her teeth are clenched and lips don't move throughout. (01:06:40)
Continuity mistake: When Alvin, Simon and Theodore are in their bedroom getting ready to call Dave in Paris, a nightstand between the beds is missing its drawers during one shot. (00:09:30)
Continuity mistake: After the Chipettes' shark incident in Bermuda, Brittany gets very annoyed when Eleanor picks up the Theodore doll. Right before the scene cuts away, Brittany has her arms crossed in two different manners between shots. (00:27:50)
