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Continuity mistake: The sun is coming up behind McClane at the end. Particularly noticeable in the shot where McClane is shooting at Simon. The previous and following shots show a black sky.

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Continuity mistake: The damage to the sedan during the shootout on the road changes. The windshield goes from being normal to full of cracks.

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Revealing mistake: When the water is pushing the truck in the aqueduct, one scene shows McClane on top of it. The truck and McClane are a different color indicating they were superimposed into the shot.

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Revealing mistake: After McClane chases the ambulance in the cab, he is driving the wrong way down a one way street. Notice the tyre marks on the pavement from previous takes. The cab follows them to a T.

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Visible crew/equipment: At the very beginning of the film a bus passes the camera. A reflection of a crew member is visible. Its fast but clear enough to see that he has his arms crossed.

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