Deliberate mistake: Gandu Three Echo, the clone who hits the screen showing the first lottery winner in the movie, complains that he has been around for 7 years and never won the lottery. However, McCord explains later in the movie that the last name tells how old the clones are. Lincoln Six Echo is 3 years old because he is in the Echo generation, and the Delta generation (Jordan Two Delta) is 4 years old. Going backwards, this would make Charlies 5 years old, Bravos 6 years old, and Alphas 7 years old. Gandu Three Echo should have really been Gandu Three Alpha. (00:05:55)
Other mistake: McCord gives Lincoln and Jordan a credit card and tells them that he will have to report it missing within twenty four hours, and he warns them that they can be traced by using it. He then gives them a huge wedge of cash. Since we have a society that still uses cash, and he has acknowledged how dangerous the use of a "stolen" credit card is - he even tells them how using it will lead the authorities straight to them - why not just tell them to use the cash? (If there wasn't enough, they get a cash advance on the credit card up to its limit - easy). He repeatedly acknowledges the risks of using the card, and it is absurd to speculate that he didn't have time to find and use an ATM to max out the card. He doesn't have to find an ATM - Lincoln and Jordan do, and as he acknowledges they have twenty four hours to do so. Once the cash is withdrawn, the card is thrown away, and nobody is at risk.
Factual error: When the first train wheel hits the ground in the close up, you can see that it isn't made of steel as it deforms as if it were foam. And there is also no damage to the concrete road whatsoever, since the wheels are made of steel there should have been quite a big hole. (01:17:50)Ronnie Bischof
Continuity mistake: When they are driving behind the truck, a flat piece of metal falls off. Shortly before it hits the car it is "flying" horizontal (20°) however in the next shot, when it hits the car it is suddenly vertical (90°). No time between the two shots for that immense change. (01:18:30)Ronnie Bischof
Continuity mistake: Towards the beginning of the film, when Lincoln and Jordan first escape, we see them running and hiding in the room full of new 'products'. Water is constantly falling from the ceiling like rain, and both of them are soaked, to the point of water running from their hair and clothing in streams. In the next shot, however, when they have just left the room, they are little more than damp.STP
Continuity mistake: Two members of Laurent's team are in the elevator going up to the 70th floor of a rather tall Gas Company Tower in LA (the building with the giant "R" logo; presumably the building's height has been raised) to go after Lincoln and Jordan. When they step out of the elevator, the display inside says "70," but the floor number outside the elevator says "L," indicating that they're actually on the lobby floor. (01:23:00)Shaun Ewing