Continuity mistake: When Helen is about to enter the hotel room she tears her dress' right sleeve off. The strap of her bra is either fallen over her arm or correctly placed over her shoulder, depending on which angle focuses. (01:18:15)
Continuity mistake: In Switzerland, after Harry talks to Juno, there's an underwater angle of the huge crack in the ice through which Harry exited. From the guard's point of view, half a second later, the hole is a mere crack. (00:08:50)
Continuity mistake: When Arnold is talking to the horse after being pulled up on the roof by the reins, his right hand moves from holding the reins considerably far from the horse's mouth to right up next to it between shots. (00:40:35)
Continuity mistake: When the terrorists burst in on Jamie and Arnie in the hotel room, the positions of Arnie's hands change between shots. Once going from being by his side to one being behind his head instantly. (01:26:25)
Continuity mistake: When Harry picks the handcuffs right after he receives the truth injection, he still has the handcuffs hanging off his hand. After he kills the guard with the hook, he grabs Helen and says "let's go". He doesn't have time to take the handcuffs off his hand but they are gone. (01:40:10)
Continuity mistake: When Simon takes Harry for a ride in his car, he drives with his left hand on the wheel and his right arm down near his side. But in one shot he pats Harry on the shoulder, and suddenly his arm is up on the back of the seat. (00:53:45)
Continuity mistake: When Arnie leaves the snow hill and meets the van, snow suddenly appears on his right shoulder, between shots.
Continuity mistake: When the horse stops and flips Arnie over the edge of the building the number of glasses on the Marriott's "A" change between shots. (00:39:40)
Continuity mistake: Early on when Arnold is setting a bomb up in Austria, he has his coat on. In the very next shot, it's off. Then it's back on again. (00:04:05)
Continuity mistake: When Harry and Gibb realize they are being followed by the station wagon, they and the terrorist pull over in front of the sidewalk twice.
Continuity mistake: During the "bridge is out" scene, Harry's helicopter is parallel to another chopper to the right of it. The chopper to the right is in front of and then behind Harry's chopper depending on the angle.
Continuity mistake: When the wall is taken off Simon's trailer, he falls on Helen and he knocks the champagne bottle off the table in the process. When Harry knocks the table aside, the champagne bottle is back on it.
Continuity mistake: When Helen is inside the caravan the way she holds the glass changes between shots.
Continuity mistake: During the fight in the limo between Jamie and Juno, some stray shots go through the roof, creating obvious bullet holes. They change quantity and position a few times in the subsequent shots. Also, in the shot when Arnold lifts Jamie out of the limo and it takes a header into the water, the bullet holes are completely gone.
Continuity mistake: When Jamie first enters the hotel room, she moves up to the table with the champagne on it. But, moments later, she proceeds to move up to the table again, right before Arnold says hello.
Continuity mistake: When Jamie Lee Curtis and Tia Carrere are fighting in the limo, their hands can be seen wrestling for the gun on the roof in one quick shot before that action actually happens.
Continuity mistake: When Tom Arnold introduces Arnold Schwarzenegger to the remote camera eyeglasses, Arnold sees his daughter stealing money from his jacket. In two camera cuts, the angle and width of the remote camera view changes, although the remote camera is stationary on the fireplace mantle.
Continuity mistake: When Harry gets in the Harrier, the aircraft's left forward nozzle is directed aft. In the next shot, the right forward nozzle is aimed down. The nozzles cannot be aimed in different directions. Additionally, the nozzles are aimed aft and down in subsequent shots of the same scene.
Continuity mistake: When Helen is on the couch with Simon, objects on the tables move around. Most notably, the books on the end table change position as well as which one is on top when the spies break in.
Continuity mistake: When Salim Abu Aziz slides through the intersection on the motorcycle, as he's being boxed in and before going into the hotel, the stopped cars change between shots. You see him stop near a white car with round, pop-up headlights, then in the next shot it's a different white car with inset square headlights. Then back to the first white car.
