Continuity mistake: When Ethan and the girl are sliding down the rope at the opera, in one shot, as it should be, her dress is up around her neck - that is all we see - and in another shot, the dress is down around her ankles, which it shouldn't be.
Suggested correction: The top of her dress is also fluttery and could have created the illusion that her dress is up around her neck.
That's not the top of her dress we see. The top is fitted over just one shoulder, there's not enough material to cover up her shoulders and neck like it does. It's the bottom of her dress.
Plot hole: Before the IMF team can exchange the yellow cards for the access control, they first need to know the data format/file type in which the access rights (retina, gait, fingerprints...) are stored. Otherwise, the computer will not recognize the data on the card, and display an error to the maintenance personnel. In order to figure this out, they would need to steal first some of these yellow cards and analyze the data on them, before they can fake a card which will be accepted by the computer.
Suggested correction: Ilsa has already prepared everything; she just can't do the dive. She had lots of time to get the data format (and a yellow card) somehow, e.g., by charming the info out of a technician or getting hold of a discarded/demo card.
Factual error: During the car/bike chase the air bags for the car should have gone off many times, most notably when the car hits the truck with the bike rider on the bonnet.
Suggested correction: The collision mentioned above was an impact at the C-pillar of the BMW. As someone involved in several traffic accidents, I know airbags are not infallible. The only airbag that MAY have been activated would be the side curtain airbag and only if the impact was near the sensor. Normally, side curtain airbags activate only in rollovers or direct T-bones.
