Deliberate mistake: The Messerschmitts have painted yellow fronts, this wasn't done by the Germans until after Dunkirk. Christopher Nolan has admitted doing this deliberately so the audience could tell the difference between the Spitfire and the Messerschmitt during the combat scenes.
Deliberate mistake: The coordinates listed for Hobbs' soccer game (34.1381N, 118.3534W) at the beginning are not actually a wooded suburban area with a recreational field, but are in fact the longitude and latitude for the Universal Studios Hollywood theme park in Los Angeles. (00:15:20)
Deliberate mistake: The elevator chime we hear at the beginning when the CIA exec reaches the floor, and the one we hear when Michael Bisping storms out of it to tackle the agent, are different. That's obviously a Deliberate Mistake since the second time around the chime is meant to resemble the bell ringing at the beginning of a match, a nod to Bisping's main occupation. Deliberate or not, the implication that Bisping has been hiding for no reason in a closed elevator for minutes is kinda comical. (00:07:40 - 00:10:10)
Deliberate mistake: One of the bodyguard's rifle which is a Sig model SG553 only has a front sight and no rear sight. The rear sight can easily be attached to the Picatinny rail. Such a rifle is only good for up close instinctive shooting, anything at distance is spray and pray. (01:39:00)
Deliberate mistake: During the fight on the ship, Lin and the others are holding Andre over the core before he falls into it. And suddenly the ship just starts exploding and crashing for no reason what so ever. It just suddenly happens to add tension to the scene. (01:33:45)
Deliberate mistake: The front passenger's side mirror [driver's side is on the right] is parallel to the screen/camera yet there is a perfectly clear image of the passenger's face looking into the mirror. (00:00:38)