Mistakes found in Pixar films

This is a page listing mistakes Pixar Animation Studios has made in their films.

Toy Story (1995)

 * When Andy leaves with Molly, he leaves her crib railing down, however, in the shot of Woody announcing "the coast is clear," the crib railing is mysteriously pushed back up.
 * After Mr. Potato Head leaves, he is all messed up in a Picasso-like way. But when the scene goes to the toys running around, Mr. Potato Head is now reset the right way.
 * When Woody tells the toys the kids are gone and the toys roam around the room, Robot and Snake are shown on the right side of the room, but a minute later, they are shown on the left side of the room under Andy's bed.
 * Sarge and his troops communicate with Woody through the wrong monitor; In reality, the one Woody used is the one for talking, and the one the troops use is for listening,
 * When Sarge calls his troops to go check out Andy's presents, the bucket they are held in is next to a table and a dresser, but earlier when the toys are roaming around the room, the bucket is nowhere to be found.
 * Woody uses a Magic 8-Ball to ask if Andy would pick him. Yet, in the shot before he does, the Magic 8-Ball was nowhere to be found.
 * When Sarge is yelling into the baby monitor that the kids are heading up to Andy's room, the baby monitor is right in front of Woody on the floor. Yet, when the camera pans out to show all the toys scrambling for their places, the monitor is gone, and Hamm is right in front of Woody. Then, when the camera zooms back in to show Woody, the baby monitor has reappeared.
 * When Buzz demonstrates his "flying" abilities in front of the other toys, his left wing would have clipped the Somebody_repainted_the_set_between_scenes?.png track.
 * When Woody first opens the back door on the moving van, the ramp handle is black. But when Rocky Gibraltar uses it, it is red.
 * When Buzz is in Hannah's room, Woody comes up to it disguised in Christmas lights. He then leaves them beside the door before he goes in. When they leave the room, the lights are gone. Later, the lights return when Woody goes to get them, but there are fewer of them.
 * When Legs lowers the Pez dispenser, Ducky down through the removed lightbulb hole, to ring the doorbell, the lightbulb housing is bigger than the hole, but they bring it up through the hole to remove it.
 * When Rex and Mr. Potato Head pop out of the moving box, lots of packing foam pops out. Later, when Woody opens the box in the moving truck, there isn't any packing foam.
 * See 'n Say frequently disappears from moving van shots.
 * When Buzz and Woody are trying to enter the moving truck towards the end, they ride RC and grab a hold of Slinky to help pull them up. RC loses power and Slinky starts to be pulled onto the road. When he touches the floor to stop him falling, he actually pushes against the flow of the road.
 * When the Little Tikes are jumping in the firetruck, one is white, but when he lands in the truck, he's black.
 * When Hannah accidentally stepped on Buzz's wing, she stepped on the light. There was a good chance that the light broke, but it didn't.

A Bug's Life (1998)

 * As Flik is just leaving the island to go find the "tough bugs", he's followed by two young male ants. The two young ants look quite different, one being blue and the other more purple. The blue one says, "My dad gives you one hour before you come back crying." and the purple one says something to the effect of "My dad says you're gonna die." But after Flik has hit himself on the rock whilst trying to cross the valley, the purple ant says to the blue ant, "Your dad's right. He's gonna die." Wrong ant.
 * The drunk mosquito clearly is a male, while in reality, only female mosquitoes drink blood.
 * The ant colony is made up of both male and female worker ants. In real life, all worker ants are female but cannot reproduce, and males, known as drones, only serve to mate with the queen and die afterwards. The same is true with bees and wasps.
 * In the opening sequence where the ants are loading the food onto the leaf, they show a panoramic shot of the scene, and you can see the Queen and Princess Atta standing under the shade near the center. But, in the very next shot, the ants are still hauling the food, and the royal family aren't there.
 * When the ants are deciding whether on not to let Flik go to the city, Atta says, "He can't mess anything up!" However, her mouth says "Screw" when she says "Mess."
 * When Gypsy spreads her wings throughout the movie, the number of yellow spots on her wings change.


 * The size of the shadow of an object depends upon its distance from the light source, not the surface it falls upon. Lifting the cutout of the bird a few inches closer to the sun as they do would make absolutely no difference to the size of its shadow, yet it quadruples in size.
 * When Tuck and Roll got Hopper's antenna, the other antenna is the only one on Hopper's head, but when zoomed out the antenna that was pulled off is still there.
 * Approximately half of the insects in the film appear to have four limbs, while the other half have the correct number of six.
 * The bird featured in the film is clearly a passerine bird, but her chicks seen at the end of the film that hatch just in time to eat Hopper alive are all depicted with down-covered bodies and opened eyes. Actual passerine birds are born naked and blind.

Toy Story 2 (1999)

 * RC's eyes are blue. However, in this movie, they're black.
 * Utility Belt Buzz is seen missing his utility belt for a brief moment (mistakenly making him regular Buzz) right before the toys find Woody in the air vents.
 * When the gang reached Al's Toy Barn, Slinky mentioned that it's closed and Mr. Potato Head said:"We're not pre-school toys, Slinky! We can read." But in the first Toy Story, Mr. Potato Head mentioned that he came from Playskool.
 * When Woody is trying to pull his arm from Al's shirt pocket while he is sleeping, Woody only reaches to pull his arm out a little. In the next photogram, the arm is completely inside the pocket as it was before.
 * When Mrs. Potato Head put Mr. Potato Head's angry eyes in his back compartment the eyes are connected. You can tell if you look in the back while Mrs. Potato Head is holding them, the stems are slanted than straight. This was definitely an animation mistake because Mr. Potato Head's angry eyes are later seen in the movie and aren't connected. But it could be that Mrs. Potato Head also puts in some more angry eyes that aren't connected.
 * Towards the end, when the toys are in the dog crate at the airport, Mr. Potato Head's angry eyes no longer look angry after they spill out of his hatch, along with his spare feet. The correction above could show that those ones that aren't connected are normal ones and Mrs. Potato Head might've put in some more angry eyes that are angry and aren't connected.
 * When Buster sniffs Roly Poly Clown and the Toddle Tots fire truck, RC can be seen at the Lincoln log house but when Buster runs over there, RC is not seen.
 * When Al goes up the elevator, the number for the 13th floor is missing for some reason.
 * In Toy Story 2, Shark's color is changed from blue to gray.

Monsters, Inc. (2001)

 * In the international version of the video/DVD, several instances of written English text have been replaced with universal symbols. However, on several occasions, they switch back to the original appearance. For instance: The "Standby/Scare" sign in the factory, the "Contamination alert" on the video wall during the first 2319 and the joke on the video wall in the final scene.
 * When Boo laughs repeatedly while playing hide-and-seek with Sulley in the men's room, nothing happens to the electricity -- no surges as with all other times she laughs (in the audio commentary by the directors, they explained that it would've been distracting if an energy surge occurred every time Boo laughed, so they simply didn't address the issue. A reasonable course of action, but still a mistake).
 * After the Scarefloor shuts down at 6:00 and Sulley goes back to the Scarefloor to do Mike's paperwork, the clock reads 5:48. After he returns again to put Boo back, it clearly shows 5:48. Finally, after Randall leaves and Sulley leaves the Scarefloor for the restaurant, the clock reads 6:48.
 * In the opening scene, on the floor, there is a toy train on circular tracks when the monster sneaks in. When the monster (Bile) trips backwards over the ball and skateboard then falls onto the jacks, the train and tracks are gone.
 * When Mike is bringing Sulley to the fixed door, he has no slivers or band-aids on his hands. Then, when he says, "It was a lot of wood to go through.", you see that he does.
 * During the opening scene, where Bile is looking under the bed, you can see the soccer ball just beside the bed and in front of the dresser. As Bile moves backward, he suddenly trips over that same soccer ball that suddenly moved from the side of the bed, to the back.

Finding Nemo (2003)

 * When Nemo first finds himself in the fish tank, Peach tries to report the dentist's actions, but her voice is muffled by the glass pane. She has to pull away to talk. However, when the other fish watch the dentist, Peach is talking perfectly normally and not muffled, even though she's pressed up against the glass again.
 * When the dentist wants to put Nemo in a bag, he has a Ziploc (a plastic bag with a zipper), but when he finally catches him, it has changed to a normal plastic bag.
 * Before Nemo is initiated into the Tank Gang, Bloat introduces the Ring of Fire. Bloat then retreats and goes between the on-looking fish. In the next shot, Bloat is on the outside/right. In the following shot, Bloat is again in the middle. However, it could be that he moved to these positions when off-screen.
 * As the fishing net is being pulled up, a fisherman is shown to the left of two wires on the boat leaning on his elbow. Then, in the very next shot, the fisherman is in between the two wires, and now, he is leaning on his hand.
 * When Marlin and Dory are inside the Whale, there is sun rays coming down into the water inside its mouth. Being inside a whale where the sun cannot get in, this is not possible.
 * Marlin is portrayed as a male clownfish. In real life, all clownfish are born male but led by a female, but turn female if said female dies, which would exactly happen to Marlin after Coral is killed by the Barracuda if this happened in real life. Also, Coral is depicted as being much smaller than Marlin. In real life, it is the other way around.
 * Unlike real jellyfish, the jellyfish in Finding Nemo sting by electrifying other fish. While real ones poison other fish with a really poisonous toxin with no antidote.
 * Peach was bought from eBay. Buying live animals on eBay is prohibited. Of course, it is possible that this particular sale was overlooked by the eBay redactors, as sometimes happens.
 * Peach appears to have eyes and a mouth. In real life, starfish do not have faces like vertebrate animals.
 * The whale appears to have an uvula and a giant throat. In real life, only humans have uvulas, and a whale's throat is ridiculously tiny for its size, being much smaller than a beach ball.
 * Pearl and her father Ted appear to have mouths drawn just below their eyes, much like a typical cartoon octopus. In real life, a flapjack octopus' mouth, like those of other octopi, is located under their bodies, where their tentacles are based. Based on this, this might suggest that what is supposed to be an actual octopus' mouth becomes Pearl's and Ted's anus.
 * Despite the Australian setting, Nigel, Gerald, and the other pelicans are based on brown pelicans, which are native to North American coasts, not Australian coasts. A more appropriate species for the setting would be the native Australian pelican, which is mostly white with black and gray wings.
 * The sea turtles are all traveling via the EAC in a huge group. In real life sea turtles do not travel together.
 * Although this movie portrays the idea that fish that are flushed down the drain are returned to the ocean unharmed, in reality, this is not the case. In reality, though any water that goes down a drain does reach the ocean eventually, it will first go through equipment that breaks down solids, meaning that Nemo would have been killed long before being released into the sea.

The Incredibles (2004)

 * After the 15-years-ago prologue, while Bob argues with Mr. Huph about the Walker policy, Bob's little bucket of pencils falls on its side and he puts it back up placed on the left side of his right hand (near the middle of the desk). When Mr. Huph leaves, it is inexplicably placed on the right side of Bob's right hand (at the desk's edge), and thus causing it to fall off the edge when Bob sits.
 * After being in a long traffic, when Bob was about to park on the drive-way. You can see there was nothing there and when he parked it and got out of the car he slipped on a skateboard coming out of nowhere.
 * When Lucius is putting aftershave on in front of the mirror in his apartment, he hears Omnidroid v.10 outside and runs to the window, leaving the bottle of aftershave on the desk with the lid off. He returns to open the drawer and the lid is back on.
 * After the dinner table scene, Bob leaves to go out with Frozone. Then, Helen turns to talk to Dash. In the first shot, on Dash's plate, all the broccoli pieces sit around the steak. Then, the shot changes, and a broccoli piece is suddenly sitting atop the piece of steak.
 * When Helen and Violet are talking at the dinner table, Violet's fork changes position a few times between shots.
 * After Bob gets back home from "re-living the glory days", you can see a barbecue in the backyard and it is on the concrete deck. But at the end of the scene, when the camera shows an aerial view of the house, the barbecue is on the grass.
 * Violet's part changes sides a few times throughout the film. It is usually on the left side of her head, but it is on the right at the end of the dinner table scene (after Bob has left with Lucius) and when Helen first discovers her and Dash on the plane. This was likely done on purpose because the camera in both of those scenes is focused on the right side of her face, so her face would not have been visible if her part was on the proper side. Also, hair was so difficult to animate, that to save time and expense, they switched the part in Violet's hair to show her face when needed.
 * Violet's invisibility powers seem to be limited on her own body. (That was shown in the first scene with her, at her school, and where she secretely listened to the controversial of her parents, where only her head and hands were invisible but not her clothes.) Although, according to Edna Mode, her supersuit is able to become invisible as fast as herself, her hairband is not included to the suit and should still be visible, but wasn't.
 * When Mr. Incredible crashes into the building trying to save a man, his shadow disappears.
 * While the family eats dinner at the table, the food keeps changing position. The commentators of the DVD discuss this during the featured scene.
 * When Helen Parr is talking on the phone to Edna Mode, although Helen's shadow appears on the wall behind her, the phone and phone cord have no shadows.
 * When Syndrome reminds Mr. Incredible about his line "I work alone," he is not holding Bomb Voyage in the flashback scene as he did in the original scene (this could, however, be explained as Syndrome's distorted perspective of the event).
 * When Frozone is taking a drink when the police are at gunpoint, he leaves the water jug on and no water comes out.
 * Although the Omnidroid 08 had the "8" on its shell, Mirage referred to it as "9000".
 * At Bob and Helen's wedding, some of the Supers who were killed by the Omnidroids years later were seen as wedding guests. When Bob asks Frozone when was the last time he saw Gazerbeam, Frozone says that he didn't see anyone from the old days (except Bob), but actually he was at Bob and Helen's wedding when Gazerbeam and other Supers were there. However, it could be that he means he didn't see these Supers after the wedding.

Cars (2006)

 * At the scene after the first race, when Lightning McQueen poses for the paparazzis, we can see Dash Boardman at the left behind Mia, he has green color. But when the security SUVs push Mia and Tia away, we can see that Dash Boardman has now a brown color.
 * In the tractor tipping scene, Mater demonstrates to Lightning how to do it by using two tractors before Lightning's first try. And then, when Lightning accelerates to make the loud noise and we have a wide open shot of the field, we can see that all the tractors in the field are still turning. Missing are the two already tipped by Mater. However, it could be that those tractors got upright before McQueen tips all of the tractors, according to the video games.
 * When the car crash starts, you can see Chick Hicks knocking Winford Bradford Rutherford off the track, who then crashes into Murray Clutchburn, who then crashes into Johnny Blamer. Look carefully in the shot after Chick says "Ha! Get through that McQueen!" and you'll see that James Cleanair is shown instead of Murray Clutchburn.
 * On the last lap of the first race, Lightning blows a tire and swerves a bit while Darrell Cartrip says, "Oh no! McQueen has blown a tire!" The camera changes scenes for about 3 seconds and then shows the large TV. However, the TV shows the same exact swerve, and the signal couldn't possibly take so long.
 * After the first race, in the scene where Lightning is rushing out on the stage thinking he is the winner, loads of confetti is shot out when the King and Chick Hicks gets onto the stage. The confetti is then falling down, but not a single flake hits any of the cars. However, in the following shots, you can see plenty of it on the stage underneath the cars, even though they haven't moved. It might be that it is special confetti and cannot hit any of the cars and can go underneath them.
 * Before Lightning falls off the end of Mack's trailer, you can see Snot Rod and one of the other cars running alongside the trailer. But when the camera moves to show Lightning coming off the trailer, you can see alongside the trailer in the background, and the cars are now missing. The camera switches back to the front of Mack, and the cars are back alongside again.
 * When the Delinquent Road Hazards are fooling around with Mack, the camera does a closeup shot of Snot Rod revving his engine, and you can see the throttle butterflies closing when he revs higher. They should be opening, not closing, with higher revs.
 * Before the start of the final race, when Chick is bragging to Lightning, the sun is reflecting off of Chick's "C in a thundercloud" sticker, displaying a clearly visible letter C on Lightning's paint. Based on the orientation of Chick's sticker, the C should be displayed backwards in the reflection, not forward as it is shown.
 * An apparent rendering error: as the camera pans through a crowd entering the stadium where the final race is being held, a brown car that is just to the right of the center of view has his left front wheel showing through his fender until the camera gets closer.
 * An apparent rendering error: at the scene when Luigi offers his service to Van and Minny, we can see Guido juggling wheels. When Guido finishes his juggling with all the wheels over his right lift, his real wheel seems to overstep his own bodywork.
 * At the scene of the final race, when Lightning McQueen discovers that his friends from Radiator Springs are his pit crew. The camera shows the pit crew, and we can see that Mack has his headphones on. Right after that, another camera shows a closer view to the pit crew and Mack doesn´t have his headphones on anymore, but on the next scenes of the race, we can see that he stills with the headphones on.
 * During the final lap of the first race, the last 2 cars continually change from Kevin Racingtire and Slider Petrolski to Todd Marcus and Claude Scruggs, despite the fact that the four cars are nowhere near each other.
 * When Lightning rides on the wall to pass Rusty Cornfuel and Floyd Mulvihill, he passes Winford Rutherford and Sage VanDerSpin, and goes to Slider Petrolski, however, if you notice, past him are Todd Marcus, Ernie Gearson, and Winford again, as if there were 2 RPM cars with the same body, but there isn't.
 * When the car crash starts, after the camera zooms out you can see that Eugene Carbureski made it through the wreck, clearly, but in the next few frames it shows Eugene in the wreck.
 * At the beginning of the film, The King's eyes are brown. During and immediately after his wreck however, his eyes are the same shade of blue as his paint. At the end of the movie, while The King, his wife and Junior are in the museum, his eyes are brown again.
 * When the jets are flying over the Los Angeles International Speedway, Pixar Animation Studios can be seen in the background. In reality, Pixar Animation Studios is in Emeryville, not Los Angeles. However, it could be that in the film, there is another Pixar Studios in Los Angeles.
 * At the very beginning of the film, Lightning McQueen claims that there are 43 racecars competing in the race (just like in NASCAR in real life), but in the actual race, we only see 36 cars racing each other.
 * In the first Piston Cup race at the beginning, Darrell is wondering if McQueen will be the first rookie to win a Piston Cup. Doc Hudson won his first Piston Cup in 1951, but the Hudson Hornets were first built in 1951, meaning that Doc may actually be the first rookie to win a Piston Cup.
 * Chick Hicks was not seen behind Lightning when he tried to stop right before the finish line at Los Angeles.

Ratatouille (2007)

 * Right before Chef Skinner exits the kitchen in an attempt to stop the soup from being delivered, there's no ladder to the right of the door. Then, when Skinner re-enters the kitchen, a ladder appears next to the door.
 * Right before Anton Ego eats the ratatouille, there is a shot of the right side of his face and his left hand holding a fork with the ratatouille on it. Very close to his left hand, in that same shot, is also a glass of wine, a lamp, and a small pot of flowers. Then, right before the image zooms away from him into his flashback in the next shot, after eating the ratatouille, the shot shows a glass of wine and now a bottle of wine next to his left hand, while the lamp and pot of flowers moved closer to his right hand.
 * When Colette asks, "What did the customer say?", there is no ladder in front of the stove. Then, right before Skinner tastes the soup, he's able to pull out a ladder from the front of the stove.
 * When Remy fixes the soup that Linguini has ruined, Remy uses a large wooden spoon to stir the soup. When Remy is caught cooking by Linguini, he leaves the spoon in the soup. A few seconds later, the spoon is no longer in the soup and disappears.
 * After Chef Skinner says "No, no, no, no, no, no!" he gets up and kicks a green cabinet, causing the top and bottom drawers to open. The screen then pans left as Skinner opens some window blinds to view Linguini. After a quick cut to his lawyer, it cuts back to Skinner. Skinner walks back to his desk, and you can clearly see the bottom drawer of the cabinet is closed.

WALL•E (2008)

 * After the escape pod scene (but before the "dance"), WALL-E uses a fire extinguisher to fly back and forth. Between every camera shot except one, all the extinguisher particles disappear instantly.
 * The sky over WALL-E's city is totally covered, from horizon to horizon, with thick brown clouds. When the Earth is seen from space at the beginning of the film, there is no such cloud cover anywhere on the planet. The clouds appear out of nowhere as the camera zooms down.
 * When EVE is reactivated on the Axiom bridge, she "sits up" on her transport bed. The camera shot changes and she's "standing" well in front of the bed rather than on it or even right next to it.
 * As a trash compactor, WALL-E doesn't function logically. When he fills his chest compartment with garbage and runs his internal compactor, the cube that exits his body is the same volume as the trash he puts in, despite that trash having been compacted. He doesn't add extra trash to fill the empty space after running the compactor -- there are three scenes that show him filling up only once with loose garbage and then ejecting a densely compacted cube.
 * L-T was orange when he was in the repair ward but was later yellow when he was following WALL-E, EVE, M-O and the other rejected bots to the lido deck.
 * EVE and M-O were dirty when they were in the airlock disposal but were later clean when they returned to earth.
 * When WALL-E and EVE are in the trash area on the Axiom, the WALL-A's blow all the cubes into outer space. The next cubes they make are the two that WALL-E and EVE are in. When they put the cubes in the airlock, there are many cubes there that weren't there before.

Up (2009)

 * Factual error: The number of balloons shown wouldn't be nearly enough to lift the house, much less rip it loose from utility pipes/cables. Pixar researched this and decided to go with what looks good on film, rather than with accuracy.
 * When the house first detaches from its foundation and becomes airborne, Russell is nowhere to be seen, although every angle of the house is shown, including underneath, the front porch and the back porch. He knocks on the door and tells Carl he chased a "snipe" under the porch - but he can't be seen after liftoff and prior to knocking. It's also worth noting that the short George and A.J. showed that Russell was clinging to the bottom of the house when it took off, when he clearly isn't seen doing so in the film.
 * Correction to above point: Actually, if you look at the porch from a side view, you can see that there is a small space between the top of the porch and its foundation on the ground (which is at the same level as the rest of the bottom of the house). Therefore, Russell was in this two-foot-space when the house lifted, so he would not be visible to anyone and have had no way to escape. The same applies to when Dug hides under the porch towards the end. Thus, the error is actually a logic and continuity error in the George and A.J. short. After all, if Russell were really in the position shown in the short, he would have no reason to hang on to the house. Instead, he would have just let it rise and he would have been left on the ground.
 * Factual error: An unpowered balloon or airship (such as Carl's house) isn't steerable; it goes where the wind is going. (Boats and ships can steer because they have the friction of the water to push against; airships such as Muntz's can steer because they have huge engines to push them in the desired direction.)
 * When Russell is complaining, when he says, "Zoology.", his face is covered in dirt. When Carl tells him that he can do his business in the bushes, he is instantly clean. However, it could be that he cleaned it while off-screen.
 * After trying to get his balloon back, Young Carl falls and breaks his arm. The ambulance that picks him up has a modern-day electronic siren, when in the 30's, it would be a mechanical siren and would be much smaller.
 * During the scene where Carl and Russell start to walk the house towards Paradise Falls, Carl looks up to the house and says, "Don't you worry, Ellie. We'll get our house over there." The next shot shows the picture of Ellie, and through the window, you can see Carl and Russell towing the house from further away. You can hear Russell say, "This is fun already.", which transitions into a different shot of them. In this shot, Carl and Russell are towing the house from almost directly underneath the house, instead of more out in front of it.
 * During the first night Russell and Carl spend in South America, Russell tries to pitch up a tent, which results in a self-injure. A few cuts later, the injury is gone. (However, this might not be an unintentional mistake, as the producers surely doesn't wanted to show Russell with a red patch over his left eye for the entire rest of the movie.)

Toy Story 3 (2010)

 * A graph editing mistake: When the toys are discussing if they're getting thrown away in the garage, look very closely and you'll see Mr. Potato Head's shoes slighty sink into the ground (only in the trailer).
 * In the beginning of the movie we see Mr. Potato Head has only one eye so Andy can pretend he's wearing an eyepatch. But later on when Andy's Mom is filming him he suddenly regains his second eye.
 * In the scene where they try to reset Buzz Lightyear, Barbie removes two screws that hold Buzz's back compartment. However, at no point, they did not re-screw the compartment closed. It just stays shut for the rest of the movie.
 * When the toys first arrive to Sunnyside and are still in the box, the side of the box clearly says Sunnyside. After they fall out, Lotso is showing them Sunnyside and the scene shows all the toys looking at them. If you look at the box in the background it no longer says Sunnyside.

Cars 2 (2011)

 * Party_wheels_error_tokyo_race.jpg the Tokyo race, Lightning McQueen has logically on his racing wheels. However, in one scene, when the start lights are showing, McQueen is seen with his party wheels on instead of his racing wheels. In the rest of the race, he has his race wheels on.
 * When Mater was at the airport entering the terminal, you could see a mark on his side that showed that his symbol was scraped off. But when he was going through the gate, the mark wasn't there anymore.
 * Cs311 88ccs-sel16-171.jpg cars in the crowd attending the Porto Corsa race have sank through the floor.
 * Although Lightning McQueen had not joined the World Grand Prix yet, you can see him forming the globe in the ad on The Mel Dorado Show, however, it could have been finished with every racer that was invited before Lightning declined the invite. But even then, it is inconsistent that he appears with his World Grand Prix customizations, that he hadn't then. It could be that they had McQueen's World Grand Prix customization planned before he declined the invite.
 * In the bathroom scene: When Mater enters the bathroom, none of the stalls are open except the one he goes into. When Rod "Torque" Redline comes in, they are all open except the one Mater is in. There is only about 15 seconds in between Mater and Rod "Torque" Redline, so it is very unlikely that all the cars had exited their stalls by then. However, it could be that the cars exited their stalls when Mater sees the toilet and before he went into his stall, as well as that when a mini blue car exits the stall Mater goes into.
 * After Lightning McQueen, Mater, Finn McMissile, and Holley Shiftwell confront Professor Z, you can clearly see that he is attached to Finn. But, right before Holley tazes him, he is not attached at all. But it might be that Finn unattaches Professor Z while the bomb was taking a minute off.
 * When Mater goes to hook up to Victor Hugo from the truck, he attaches his hook to the front left wheel. As Mater pulls him in to the back room of the casino to join the rest of the cars, the hook is attached to the front right wheel. However, it is possible that Victor made Mater change wheels.
 * In the Radiator Springs Grand Prix, Lightning had his Allinol sign when he introduced Francesco to Sally. But when he backed up, you can see it's not there.
 * When Holley, Finn and Mater are trapped in Big Bentley, it is emphasized that they move closer to their death every minute, starting at the top of the hour. Later, when the clock is being reversed, it shows fifteen minutes had passed. Originally, when Holley and Finn were moving closer to the gears, they only moved a few times, suggesting only a few minutes had passed.
 * At the World Grand Prix welcome party, Francesco Bernoulli appears during a short scene with different wheels, with gray wheel trims and no inscriptions.Francesco's_Party_Wheels.jpg
 * When Mater was on the phone, he was not on screen on the TV. But when Francesco was being mean to McQueen, he somehow knew that Mater was a tow truck even though he wasn't on screen. However, it could be that Mater said that he is a tow truck before McQueen and Sally came in. Another explanation is that Francesco thinks that all tow trucks sound like Mater, and so he calls him one as well. The most likely explanation of this is that McQueen is world-famous and thus various details about him, including his friends, are widely known as is the way with celebrities, although Darrell Cartrip said that he doesn't know Mater when he actually did in the Cars video game.
 * After the bomb was deactivated, two police cars surrounded Miles Axlerod. One of them was black and the other one was grey/gray with blue and green squares. After Mater opens Axlerod's hood/bonnet to show his engine, the black police car then changes, matching the other one.
 * When Mater wakes up from his nightmare, the time on Big Bentley says 3 o'clock, but it chimes 5 times.
 * When Guido tries to take the bomb off Mater, the time on it said 2 minutes and about 38 seconds, but when Mater bows to the Queen just before the guards notice the bomb, the time on it said 1 minute and about 52 seconds. McQueen and Mater's conversation and them flying to Buckingham Palace took more than a minute between these scenes.
 * When the bombs on Tony Trihull's magnet explode, the explosion was big enough to kill Finn McMissile and Professor Z. However, in the following scenes, they were still alive. Although, it is likely that the two were able to escape the detonation range before it exploded.
 * In the credits, there was a paper revealing that Mater was knighted on Tuesday 15th July 2011. In real life, 15th July in 2011 was on a Friday, not Tuesday.
 * In the scene right when Mater and Lightning enter Buckingham Palace, look in the background. There is a mountain there. Then the scene shows Finn and Holley entering, then it has Lightning and Mater moving closer to the Queen. In that scene, the mountain is a now a big building.
 * When Mater was driving away from McQueen due to the bomb, Darrell Cartrip says he doesn't know Mater, even though he does in Cars: The Video Game.
 * When Professor Z was being chased in London, in one scene, in the background, there was a roundabout sign showing counter-clockwise arrows, as well as that the roundabout was counter-clockwise. Countries that drive on the left side of the road, like the UK, have clockwise roundabouts, while countries like the US that drive on the right have counter-clockwise roundabouts. That roundabout being shown in that scene was counter-clockwise, even though it was showing cars driving on the left side of the road in London (though Mater thought that the UK drives on the right).
 * When Mater was driving through London using the rockets, and had McQueen holding on to him, there was a blue Gremlin telling Grem and Acer that Mater and McQueen are coming their way. Beside the blue Gremlin was a sign on a wall which was mentioning about some drinks in a cafe, including oil teas. One of the words on the sign was "favorite", which was spelt "favorite" on the sign, even though it was being shown in London (and showing the British name for gasoline: "petrol"), as the UK spells "favorite" with a "u", spelling it, "favourite".
 * Although Tokyo Mater ended with the villain Kabuto being stripped of his modifications after losing to Mater in a drift race, in his appearance here, he can be seen with his modifications again. However, it could be that was another car that looks like Kabuto, perhaps the story never happened, or it is most likely that Kabuto got his modifications back after the story.
 * In the film, Holley Shiftwell gets a dent when she prevents Grem and Acer from getting Lightning McQueen and Mater. However, in Cars 2: The Video Game and Kinect Rush: A Disney/Pixar Adventure, the dent isn't there.
 * When Acer and the blue Pacer discover that Finn is still alive when they try to get Mater, Finn was holding a fire extinguisher and shoots foam onto their eyes. Acer and the blue Pacer then couldn't see where they're going. The blue Pacer and Acer were driving in the same direction until the blue Pacer turns left and runs into a police car while Acer went on straight ahead. In the shot when the blue Pacer starts to turn left, Acer is driving towards the poles holding the crowd and past the pit building. But in the shot when the blue Pacer runs into the police car, Acer is then shown driving past some buildings. Wrong place. However, it could be that when the blue Pacer is driving left, Acer was driving left as well and the blue Pacer drives left again before Acer goes on straight ahead.
 * On the race track in Tokyo, the road leading to Rainbow Bridge seemed to have a few mistakes. In reality, the road has a railway in the middle, however on the race track in the film, the railway track isn't there. Two roads connect to Rainbow Bridge. In the film, the road that was part of the race track goes over the other road on Rainbow Bridge, but in reality, the two roads are the opposite.
 * When McQueen says that he will still use Allinol in the final race in London, he mentions about Mater, which Mater had his eyelids pointing up, in the next shot, when Brent Mustangburger mentions to the audience what McQueen said about still using Allinol, Mater's eyelids then suddenly change their position, so it should be that it might have skipped a bit.
 * When Grem uses the pulse generator to try to kill McQueen in the last race, the racers seem to be driving across Westminister Bridge and past Big Ben/Big Bentley. However, when Mater got free and drove out of the clock tower, it looks as if there is traffic on that same road leading to Westminister Bridge.
 * In the introduction before the first race in Tokyo starts, when the announcers mention Lightning McQueen, there was a box showing McQueen from on the track when the rest of the screen shows an aerial view. Miguel Camino is between McQueen and Nigel Gearsley, which all of the racers are turning side to side in the test before the start of the race. Camino is only seen once on the box showing McQueen from his front and only Gearsley is seen on it for the rest of the time that it is being shown.
 * When John Lassetire (John Lasseter) is in his World Grand Prix customization, his eyes were brown. However, when he changed it after the World Grand Prix, which he was green with wooden doors, his eyes then changed to blue.
 * During the introduction before the race in Porto Corsa, when Darrell starts talking, the DVD and Blu-ray subtitles accidentally say Brent's name when it shows who is talking when that character's mouth is not shown.
 * The circuit of the London heat of the World Grand Prix goes through the middle archway of Admiralty Arch. In reality, this archway is opened only for (rare) State occasions, and only the Royal entourage is allowed through it; in everyday traffic use, only the other two arches are used. However, it could be that in the film, they were allowed permission to use the middle archway in the circuit.
 * Before you see Finn McMissile at the party, on a bridge, there is Kabuto, but his eyes were brown instead of green. However, it may be due to the fact that Kabuto was probably wearing green contacts in Tokyo Mater, and that being of Asian origin, that brown is actually his normal eye color.
 * Despite the above, Ramone and Flo, despite being implied to be Latino and African American judging by their accents, actually both have blue eyes.
 * When Grem and Acer leave Big Bentley, they use a lift/elevator. In real life, the Elizabeth Tower does not have a lift/elevator. This is most likely artistic licence; unless cars in the Cars universe have abilities we haven't seen, there's no way they could drive up or down the narrow, steep and winding staircases in the real-life version of the tower.
 * In the international version of the DVD/Blu-ray, several instances of written English text have been replaced with universal symbols or removed. However, on several occasions, they switch back to the original appearance, or that the original appearance is shown, then the new appearance. For instance: The World Grand Prix racers' names on the wall of the pit building and the box with text showing when McQueen is talking about what fuel he will use in the final race in London.
 * The red telephone boxes in London are still human-sized in the Cars world, making them not big enough for the cars to get in.

Geri's Game

 * The box of chess pieces falls off the table at 3:28, and is not seen on the ground when the camera pans out again. This was discussed in Jan Pinkava's audio commentary of this short. When he was asked about this question, he simply replied, "We just forgot to put it in."

Lifted

 * When Ernie is falling out of the spaceship, Mr. B stopped the fall using a button, and after leaving to give a push to Stu. Ernie should fall to the ground, because the button with which Mr. B used to save him was no longer in action. But later, he didn't fall into the ground.

BURN-E

 * The Captain and Auto's fight is much shorter in the short than in the main film.
 * WALL-E can be seen waving at BURN-E while the Probe ship is pulling in, but in the film, WALL-E isn't shown to be waving at him. This is mainly because he was offscreen at the time.
 * The hull of the ship in the screen where BURN-E is welding the third lamp is different from the main film WALL-E.
 * The life pod used by BURN-E is Life Pod 9, while in the main film, WALL-E uses the Life Pod 12.

Dug's Special Mission

 * It is implied that Dug was chased out in retaliation by Alpha and his gang prior to Dug meeting Carl and Russell, while in the movie, he was still under the impression that Alpha sent him on a "secret mission." Beta and Gamma even say it themselves.
 * Alpha's voice is already faulty and comically high-pitched, yet in the movie, when the pack is first introduced, Beta and Gamma express surprise at Alpha's faulty voice, as if he had been speaking with his real voice until then.

George & A.J.

 * There are slight dialogue differences in the scene where George and A.J. first talk with Carl at his house.
 * In this short film, Russell is seen bracing himself underneath the floorboards of Carl's house. While this attempts to explain how Russell ended up on Carl's porch later in the film, Russell is not seen underneath Carl's house when it takes off in the film.
 * In Up, Carl's surname is always spelt as Fredricksen. Yet in the news items which are seen crawling across the screen during the news program, his surname is spelt "Fredrickson" twice, a difference that could be attributed to a mistake on the part of the news media.
 * The Shady Oaks Retirement Village building blasts off into the sky in this film, yet during the credits of Up, Carl is seen socializing with other residents of the home along with some of Muntz's dogs, implying he ended up living there after the film.
 * At the end of the short, Carl is seen in the airship without his jacket. Although through most of the end of the film he is seen without a jacket, he does have one at the very end in the airship.

Rescue Squad Mater

 * Mater's eyes are usually hazel-colored, but when the episode shows him as a fire truck and a doctor, his eyes are blue.

Unidentified Flying Mater

 * When Mater says, "Hey, Fillmore!", the DVD and Blu-ray subtitles mistakenly spell Fillmore's name "Filmore" (without one of the "l"s).

Mater Private Eye

 * MAKEOVER!!!!.png Lightning McQueen goes to Flo's V8 Cafe, Flo is shown to have visible eyelashes on her eyelids, but when the camera cuts to a closer shot, her eyelashes disappear. AirMaterCredits.png

Air Mater

 * Stacy Keach's name is spelled "Stacy Keach." However, in the credits, it was spelled "Stacey Keach."

Time Travel Mater

 * When Mater time travels to the time when he tells his story to Lightning McQueen, he takes McQueen to help him save Radiator Springs. However, when Mater finishes his story, McQueen is there listening to the story. It is never shown when Mater brought McQueen back. But it could be that it skipped the time-traveling Mater taking McQueen back to the present and going back to his own time.
 * After Mater finishes his story, McQueen doesn't believe him, even though he went time traveling with Mater just now. However, it could be that McQueen thinks this was in his head.
 * Lizzie, Stanley, or any of the cars in the past, never seem surprised or curious to see more modern cars from the future (Mater and Lightning).