Continuity: When Xander is chasing the sub, he is driving on a road to the left of the river, yet when he comes onto the bridge, the car does a left turn onto the bridge, which indicates that the car was driving down a road to the right of the river. (Time)

Continuity: When Xander is snowboarding down the mountain to take out the communications tower, he snowboards goofy (right foot in front) to regular (left foot in front) many times. That either means the stuntman is regular footed, or he would have to do a lot of 180's spins, which is impossible to do when there is a giant wave of snow chasing you.

Continuity: When Xander is snowboarding down the mountain to take out the communications tower, there is one point where the avalanche clearly bumps Xander and moves him ahead by about 12 feet. It appears to be a correction in the graphics so that it doesn't appear that the avalanche will outrun him down the mountain, however, poorly edited.

Continuity: When Xander is in the Diner you can see his watch three times. It shows a different time the first time you can see it than the second and third time. (Time)

Visible crew/equipment: In the fifth shot of the amazing bridge stunt, an Arriflex camera with yellow cords hanging down from the camera is visible, off to the left of the screen. Also, in the same shot at the beginning of this shot (in the upper lefthand corner) you can see a guiding ramp setting the car to go off the bridge.

Deliberate "mistake": When XXX is taken to meet Samuel L. Jackson at the Opera in Prague he is driven to the front of the Rudolfinum Concert Hall, yet he meets Jackson at either the National Theatre or the State Opera House (it's definitely one of the two), which are across town. Also, the Rudolfinum doesn't produce operas, they are only a concert venue and have a big pipe organ behind their stage.

Factual error: When agent Shaver shows Xander the bandage explosive for the first time he tells Xander to stand behind the wall then detonates the explosive while he is standing next to it. Agent shaver states that the explosive is powerful enough to blow a hole in a steel safe or vaporize a human. The explosive doesn't appear to be a shape charge, so the explosive force should have gone in all directions and hurt or killed agent Shaver. (Time)

Revealing: When Xander is standing on Ahab he is going about 80 miles per hour - that would make it like going through very strong winds. Yet he has no trouble standing on Ahab and the wind has no effect on him or his clothes. (Time)

Factual error: The name of the sub is AHAB, but it's written ANAB, the "H" in Russian looks like a "X." (Time)

Continuity: In the scene just after the senator calls the cops, you see XXX round a corner in the Corvette, look closely and you will see both mirrors still intact, but in the next scene, they are gone again. (Time)

Plot hole: When Xander is driving onto the bridge, chased by the police cars, we see that there are police cars also blocking the end of the bridge to stop him getting away. How come none of them noticed the ruddy great ramp sitting alone in the middle of the bridge and moved it? It wouldn't take a genius to work out what he might do.

Visible crew/equipment: Just after XXX says "There's the bridge" and points, you can see the boom mike on top of the frame. (Time)

Visible crew/equipment: During the battle in Colombia, Xander jumps over a fence and when he's seen landing, it is clearly a stunt double.

Continuity: When XXX is hanging by his arms in the shed, just before he tells the bad guy he is short, the bad guy is holding onto XXX's shirt. In the next shot of the bad guy, he is isn't holding the shirt, yet in the next shot of XXX, the bad guy's hand is holding the shirt as before. (Time)

Factual error: In the scene where Asia Argento reveals that she is a Russian agent, she says that she works for the FSB, the Russian CIA. This is wrong, however, the Russian equivalent to the CIA is the SVR, the FSB is more like the FBI.

Revealing: After X has put the bandaid explosives onto the motorbikes out the front of the compound, and is making an escape, he removes the bandaid off his bike and does a large jump over the castle wall. One of the bad guys is chasing him on another bike, and jumps the wall like X. As he is "flying" through the air, his long black trench coat remains hanging straight down. It should be flailing out behind him from his motion and the wind. (Time)

Factual error: Near the end when all the police cars (the ones with blue writing as opposed to green) show up at the castle, some of them are 'Mestska Policie' which means city police or district police in Czech. In Prague these policemen are only responsible for keeping the peace, ie handing out tickets, preventing bar fights, etc. They would not have been at such an important and dangerous raid. (Time)

Other: After Xander escapes the avalanche by grabbing the pole, the avalanche is suddenly over. If it was that big of a avalanche it would have gone a lot farther.

Visible crew/equipment: Watch Xander face as he stands on his car before he jumps off the bridge at the beginning - it can be seen that it is the stunt double and not Xander.

Continuity: The first time you see Samuel L. Jackson, his eye on the burnt side is a real pale brown, but throughout the movie his eye changes to a normal brown and then light, then back to dark.