When Fabienne takes ice cubes out of the fridge in one hand while holding the ice bucket in another, it can be clearly seen that the amount of ice is not enough to fill even the half of the ice bucket. However in the next frame after dropping ice in the sink, she walks out of the kitchen with the ice bucket, overfilled with ice cubes.
As Katanga is shot with the flare gun it is twilight. When he is on fire jumping overboard, it is full darkness with the Bastille Day fireworks blazing.
During the chase, the odometer reads 156.9 going into 157.0. After a few minutes of more driving, the odometer is shown again this time as 157.1, where it left off a few minutes earlier.
As the red Opel Commodore arrives to the cabin after the car chase it is missing the rear window. At the end, when a cop is waiting for the car's driver to return, water droplets are clearly seen on the rear window.
During the fight between Joe and Vermont, Fabienne kicks the gun out of the kitchen. In the next shot, it has rotated 90 degrees from its previous resting position.
As the German cop is stabbed to the side during the jailbreak, he drops dead instantly even though the blade coming out is bloody for less than an inch from the tip. Deadly maybe, but not likely that fast.
The machine-pistol only has a relatively small ammo-clip, yet it is shown to fire dozens of rounds over an extended period.
After Katanga says, "Time's up", the squealing tires of Joe's returning car is heard in the distance, yet the car is shown to still be miles away at the time.
The grass fire is started by a lighter, yet spreads too rapidly and appears to have multiple ignition points. One shot shows oily, black smoke indicating petrol/diesel was used to fan flames.
When the Commodore is bouncing off road during the chase, the camera man is visible in the rear seat. Moira is no longer in the back seat.
When the red Commodore is driven away from the hut, a sound mic is visible on the LHS underbody, ready to pick up the car chase audio.
James Mason sounds very British for an American officer.