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: 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.
Revealing mistake: When Aziz (Art Malik) shoots at Harry (Arnold) in the bathroom, he has a rifle with two magazines taped together. If you look closely, the second magazine taped next to the one in the gun is empty. He then reloads the gun by flipping the second, empty, magazine and loading it.
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.
Other mistake: During the bathroom shootout scene, the terrorist shoots the bathroom stall walls from a heavy angle. When the walls and doors are shown from the front while being opened, the bullet holes go directly through both walls of the doors, which would only look like that if they were shot from directly in front.
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 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.