Continuity mistake: Natalie knocks Hogan down and does a lock on him choking him with her legs. From one angle she is leaning her body and right arm over him, but a frame later she has her body and right arm resting behind his arm in a totally different position.
Continuity mistake: When Fury and Stark are talking in the destroyed house, the butler is seen relaxing in the background with both arms resting by his lap. A frame later, from a different angle, the butler has his arms raised and he's watching through a pair of binoculars.
Continuity mistake: The executive toy on Pepper's desk is moving around throughout their conversation, but the positions don't always match as the camera angle switches - keep an eye on the longer bit of metal, which is sometimes pointing upwards then is suddenly upside down in a different shot.
Continuity mistake: When Ivan's father dies, his neck in covered in some sort of scarf that hides it completely. When the angle changes, the neck is perfectly visible.
Continuity mistake: While Ivan is being scolded by Hammer, a thick, long, white streak of hair appears and disappears randomly on the left side of his head. (01:25:10 - 01:26:15)
Other mistake: When Tony drives the city model home in his convertible, the wind would have blown away a lot of dust. When he sets it up at home, he blows a thick layer of dust off it.
Suggested correction: The wind would have blown dust off the exposed sections, but it was stacked. There would still be dust on other parts of the model.
I just believe the wind would easily be blowing strongly throughout the entire thing. It's not aerodynamic nor wrapped in any way, plenty of space between the pieces. I highly doubt dust should be present on that.
Continuity mistake: When Whiplash and Hammer are in the hanger, the butler comes in and removes the same thin wine glass twice. Other glasses disappear and reappear and move position between camera angles. Also one glass fills instantly between shots with water when no-one was nearby to fill it.
Continuity mistake: When Stark leaves the box of strawberries on Pepper's table, its position keeps changing between shots.
Revealing mistake: There are obvious differences in the appearance of the "Ironman" and "War Machine" suits throughout the movie, as pertains to them showing a digitally-rendered suit vs an actual physical suit that the actor/stuntmen wear. Whenever a real suit is shown on an actor, it is quite bulky, most noticeably around the abdomen/stomach areas, and the size of the head-piece.The digital versions are much slimmer in the abdomen areas and the headpieces are much smaller and more compact.
Continuity mistake: A waiter is pouring wine in Ivan's glass but in the next angle, a tenth of a second later, the man is gone.
Factual error: During the translated Russian TV broadcast, we see Stark's last name written in Western script, not Cyrillic. It should be "CTAPK" not "Stark."
Continuity mistake: When Stark presents the Expo he bows to the public. A frame later his head is up, without him having done any movement to raise it.
Continuity mistake: When Ivan shows up on the racetrack watch the Johnnie Walker banner on the left and you'll notice that Ivan is sometimes side by side to it, others the ad is gone, others it's way behind. This keeps changing all the time.
Continuity mistake: When Ivan is being served wine both glasses are close to each other. A frame later they're several centimeters apart.
Continuity mistake: Ivan's scar changes drastically from the beginning of the movie. When his father dies and he is building his whiplash suit during the opening credits his facial scar lays on the surface of the skin trailing down his face from the outer corner of his left eye. Throughout the rest of the film it is a smaller, deeper scar about a quarter inch to the right of the original scar.
Continuity mistake: When Stark is at the diner with Fury, Tony's glasses by the edge of the table swap from laying horizontal to slightly skewed between angles.
Continuity mistake: After Tony puts the shield under the tube and takes the level off, there's nothing on the ring around the tube. But in the next shot facing Tony, there's an object that looks like ball bearing sitting on it.
Continuity mistake: When Tony is at the party and shooting things, he shoots the watermelon from his chest RT. We see the watermelon explode and the beam dissipate. The next shot is the watermelon raining down. Then the next shot is of Tony and the beam still coming out of his chest, but he never fired twice.
Continuity mistake: At the end of the movie just after Senator Stern pins medals on James Rhodes and Tony Stark, we see a shot where Tony puts his arm around the Senator. All three men are arm in arm. The camera angle changes to the back of the men, and Tony's arm is at his side. Then when the camera angle goes back to the front of the three men, Tony's arm is back around the Senator. (01:56:07 - 01:56:57)
Continuity mistake: During the opening of the fight scene in Monaco, pay attention on the first racing car (the red one) that Vanko attacks. Even before he cuts the car's front spoiler off, the rear of the vehicle begins to flip over.
