Continuity mistake: When Felicity was packing the tennis racket into the bag in the tent it must have been a tight fit, but a second later the bag is seen completly empty.
Revealing mistake: In the scene where Ms. Spitz is with Austin at the party and she orders the hitman to use the bazooka, you can clearly see when he fires that the missile stays in the tube. (00:28:15)
Continuity mistake: When the fembot Robin Swallows, and a male assassin at the party attempt to murder Austin, Robin gets a knife in the back which stays there even when they get blown out of the window. As they're falling, notice that before she turns over it's still in her back, even when Austin moves her in front of himself to shield his fall. The only problem is, with the knife still in her back Austin would've been really injured when they hit the ground. However, when they land, the knife mysteriously disappears. (00:28:30)
Other mistake: In the scene after Mini-Me's and Austin's fight when Austin is sitting on the space toilet to "eject" Mini-Me he picks up a copy of the London Times, as seen on the cover page of the newspaper. On the last page of the newspaper there is a weather page showing a map of the United States. Why would the London Times have the weather for the United States instead of Great Britain?
Continuity mistake: Austin is in a different position in his frozen state in this film than he was in the first film when he was unfrozen.
Continuity mistake: In the famous "fight scene" with Austin and Mini Me, we see Mini Me picking Powers up in a Gorilla press and turning him around. Well, when the camera is closing up on Mini Me, he is standing still, twisting him round. However, when the camera isn't close-up on him, Mini Me is turning round.
Factual error: Through most of the film, a lot of the cars used are left hand drive, while in the UK cars are right hand drive. While left hand drive cars are occasionally seen in the UK, they're very few and far between.
Continuity mistake: When Basil is driving Austin through the big warehouse to where the time machine is, the car is travelling in a straight line yet he is turning the steering wheel. (00:23:00)
Continuity mistake: When Austin is playing chess with Ivana, his necklace symbol keeps switching sides, yet he clearly isn't jolting around enough for it to move in this way.
Continuity mistake: After Austin and Felicity have crossed the street in London and have sat down at the cafe, where Burt and Elvis are playing, Felicity has a red handbag with her. She places the bag on the table whilst her and Austin talk about the future. When Austin says "care to dance" the bag is still on the table. They both go to dance, and the table is taken away by a woman towards the edge of the screen. The scene goes back to Austin and Felicity dancing for a second. The woman can now be seen with two chairs, but no table or red handbag.
Continuity mistake: There is a scene when Austin and Felicity spend a day on the town, go back to Austin's shag pad, then separate for the night. The next day they are back in the same exact clothes as yesterday (after a clothes change piece the night before).