Continuity: When John and Matt are in the patrol cars and Gabriel has them rerouted to a blocked road, there are no cars on the road besides the patrol cars, but throughout the scene when the camera cuts you can see traffic moving smoothly along with them.

Continuity: John's face is all bloody after he rolls from the car and "kills a helicopter with a car". The blood on his face constantly changes during the shots. Sometimes there is blood all over his face, sometimes there is quite a bit less. Sometimes he has blood streaming from the cut on his nose, sometimes there is nothing on his nose. The blood changes back and forth, so it's not just him wiping the blood away from his face (and his hands are by his sides during all the shots). Submitted by Nick Bylsma

Continuity: Near the end of the film FBI operatives rappel down from helicopters for speed and immediately enter the warehouse where John McClane and friends are. Almost immediately Bowman appears and vouches for the three left alive in the building. He got there very quickly considering his helicopter was still in the air when the operatives were landing.

Continuity: In the traffic jam in the beginning of the film (right after all the lights have changed to green), the car next to McClane's is black/dark. But a few seconds later when you see it from a helicopter, it has changed to white.

Continuity: During the final truck chase through Baltimore, several traffic lights are seen with lights in them. But all the power was off. Submitted by Jacob La Cour

Other: When McClane is attacking the helicopter from inside the tunnel, the guys in the helicopter see him coming when he is still deep inside the tunnel. They would not be able to see that the car was moving - let alone that it is McClane attacking them. Submitted by Jacob La Cour

Audio problem: When Gabriel is starting to move out with the large truck, you hear the sounds from the truck tires but the tires aren't moving. Submitted by Boobra

Other: The hackers cause a massive traffic jam by manipulating the street lights. Yet, only minutes later, the streets are conveniently empty when McClane is being chased by the chopper. Sure, one or two streets were secured by police, but the chase scene goes through many more streets.

Continuity: The hacker slaps McClane's daughter moving her head to the right, hair messy around her face. The immediate angle from the hacker's point of view shows her head tilted to the opposite direction, with her hair perfectly brushed. Submitted by Sacha

Continuity: During the traffic jam scene, when the truck crashes against the taxi, the view inside McClane's car shows the taxi colliding against the car, dragging it away violently. From the aerial angle, the taxi doesn't touch McClane's car at all. Submitted by Sacha

Continuity: When the truck crashes into the pillar that McClane and Matt are hiding behind in the tunnel, we see a large portion of the pillar fall off from the left side. However, when McClane gets up to drive the police car, the pillar is in perfect shape.

Continuity: When McClane is driving the police down the ramp to the tunnel so he can elude the helicopter, the car's windshield doesn't have any bullet holes or cracks in it, even though it did just a few seconds earlier.

Continuity: While McClane is taking control of the Freight liner during the final chase, he jumps onto the driver's steps, and we see the driver's side window is closed, he shoots the driver and whips the door open, and the window is now open. He climbs into the truck and slams the door, and the window is once again closed. There was obviously no time for the window to be opened and closed during the fight.

Continuity: During the final chase, the right front tire of the Freight liner is flat at one point after hitting a number of parked vehicles. The next shot showing the front of the truck shows the tire is fine.

Plot hole: Just after the F35 shoots most of the top off of the cab and the back of the semi truck McClane is driving, there is a camera shot that pulls back from the front of the truck that shows large 1-foot diameter holes in the top of the engine compartment. The first problem is that the plane's bullets came from the side, not the top (not down through the engine hood) and the second problem is that the engine shouldn't still be running with multiple 1-foot holes shot into/through it - yet the truck continues to climb the incline.

Continuity: The news broadcast showing panic on the stock markets is shown shortly after McClain arrive in DC. However the speaker says panic broke out "this afternoon". But it's morning. Submitted by Jacob La Cour

Audio problem: After the terrorist in the helicopter opens fire on John and Matthew, a policeman yells something about backup into his radio. What he's saying doesn't match up with his mouth.

Visible crew/equipment: The scene John and Matt were in the middle of an alley, with Matt using the mobile to locate the power hub, the crew can be seen from the reflection from the glass behind Matt.

Factual error: At the end of the movie the CIA helicopters are flying from DC to Baltimore. We see them over a wide stretch of water. Then there is a long sequence with McClane, and when we get back to the helicopters they are still over water. When you fly from DC to Baltimore you do not cross a long stretch of water. Submitted by Jacob La Cour

Continuity: During the shootout at Matt's apartment John scrambles away from the refrigerator and pulls himself around the corner. The view is from behind John and his chest is facing the corner as he pulls himself around it. The scene jumps to a view from in front of John, yet he's somehow already turned himself around so his back is to the corner (this makes for an easier transition to using the corner as cover, but it messes up the continuity). He couldn't have done this since he was still in the process of pulling himself around the corner. Submitted by Nick Bylsma