Revealing: After receiving the new Firebolt Harry runs outside to use it. In the close-up as he takes off and in the next wide shot many of the students' eyes are not in sync with Harry's flight.

Continuity: When Stan Shunpike says, "Take it away Ernie," we see Ernie having a bite of his toast. He then puts his hand with the toast down to put the bus in gear, but when the view cuts back the toast is suddenly gone.

Continuity: When Potter goes onto the bus he has his arms down. When in cuts he has his right arm in his pocket.

Continuity: When Harry lifts the lid in the Honeydukes cellar, in the first shot there are two gold pots, small and large, beside the table directly in front of him. Of course in the next shot, as the man climbs the stairs, only the short gold pot is beside that table. In the next shot, as Harry climbs out, the two pots' positions differ.

Continuity: Outside Hagrid's when Cornelius Fudge says, "...shall be executed this day at sundown." you see Harry, Hermione and Ron hide behind some pumpkins. You can also see a crow standing on a pumpkin right in front of them. When it cuts from behind them that crow is gone.

Continuity: After Harry leaves the Dursleys, Sirius the dog shows up behind a park bench surrounded by dimly lit thick bushes. When the Knight Bus arrives, the bench is visible across the street and now it's brightly lit and the trash container beside the bench is clearly visible. Then, before Harry boards he has one more look at the bench and it is just as dark as the first shot.

Continuity: When Harry says, "I said we'll take you to the castle," to Pettigrew, you see Sirius pointing his wand at Pettigrew. When it cuts Sirius is standing next to Harry, but he is no longer pointing his wand.

Continuity: When Vernon says, "You've nowhere to go," to Potter, you see Vernon grab the banister. When it cuts, the way he holds the banister changes.

Continuity: As Lupin packs in his office, the gramophone and books on his desk are visible in many shots. When Harry first walks in, the set of three thin books, bound with a string at the top of one pile, as well as the gramophone and other books noticeably change their position in quite a few shots.

Continuity: On the Hogwarts Express, Lupin pulls out his wand to repel the Dementor attacking Harry. In the shot facing Lupin his shirt sleeve is mostly covered by his suit sleeve and he holds the wand a particular way. In the next close-up facing the Dementor, Lupin's arm is visible and a much greater area of his shirt sleeve is now seen and he holds the wand completely differently.

Continuity: When the stone hits Harry, the very first time, in the shot inside Hagrid's, he yells, "Ow!" and as he turns the blue cup touches the wood tray. In the next exterior shot, the blue cup is closer to the birdcage.

Revealing: Watch as Hedwig lands on Harry's arm. It's quite obvious he has some protection under the shirt sleeve as his arm and wrist is unnaturally thick.

Audio problem: When Cornelius Fudge says, "Oh yes, indeed, indeed." near the end of the movie, his mouth doesn't move.

Continuity: When Harry and Hermione are back in time, Lupin's transformation happens a lot faster than the first time. Also, the first time, Hermione shouts "Harry!", then Sirius yells "Run! Run!", then Lupin howls. The second time it goes "Harry!", then howling, then "Run! Run!"

Continuity: When Ron and Hermione are arguing about Crookshanks in the Leaky Cauldron, Sirius does not move in the 'wanted' poster. That same poster is visible when Harry first enters with Tom, and Sirius doesn't move in that shot either. However, when the poster is the focus of the shot, Sirius does move in the magical poster.

Continuity: When Marge floats out the patio door in the exterior shot her jacket lies flat over her skirt. In the next shot Vernon shouts, "I've got you Marge," as he grabs hold of her hands, and the bottom of her jacket is way up by her arms - note the blazer lining and her blouse. However, in the next shot the jacket lies straight and flat once again.

Continuity: When Snape is insulting Hermione on being a know-it-all while he is substituting for Lupin, he has a slide show running. The shot shows Hermione with the projector behind her. The projector now changes slides fully and stops moving. When the shot changed back to Snape, the slide is still changing. It could not be the next slide because the slide changes every few seconds.

Continuity: When Harry enters the room in the Leaky Cauldron that the Minister of Magic is in, Hedwig has arrived before him. The owl shown at the start of the scene is a white owl with many black spots on both its wings. However, when Harry leaves and Hedwig flies to his arm, this owl has very few spots at the edge of its wings and tail, obviously it's one of the other owls that portray Hedwig.

Continuity: The cart with the TV changes its position in various shots. For example, in the close-up of Marge's legs lifting off the ground and when Marge floats out the door in the exterior shot, the cart is aligned with the doorway, then at other times it is at the inner edge of the draperies or in between.

Continuity: When Hermione and the others are in Hagrid's hut, a rock with a swirl on it hits the pot. Later, when Hermione and Harry are reliving the scene from the exterior view, Hermione picks up the "same" rock to throw at the pot. The rock is different though, it has a bigger swirl on it.