Jack gets out of his car at work before being surprised by Sydney, and is not carrying anything in either hand. When he finally turns to walk away after their exchange, he is holding a briefcase.
When Sydney is chasing Anna through the basement, she can be clearly seen wearing white running shoes in several shots. By the time she reaches Anna, her feet are bare.
When Sydney swings on the chain into Anna, Anna's hair alternates between being loose and tied in a ponytail between shots.
When Anna meets Sydney in the stadium, Anna's hands jump from the belt of her coat to being at her sides between shots.
When Sydney is trapped outside the vault chasing Anna, during the lockdown, the vault's key pad reads "BLOQUEO ABAJO". This however doesn't mean lockdown in Spanish, at best it could mean, "blocked down below".
When Ineni Hassan was holding a gun to Sydney's head while she was holding the ball of plutonium, he says in Arabic "nazzel ha shwaya shwaya", which means "put it down slowly." However since in Arabic language males and females are spoken to differently, he should've said "nazlee ha..." because "nazzel" is for males only.
Marshall gives a small explosive inside a coin to Sydney which she will use during her mission in Madrid. The coin is an old version of the one of 5 pesetas which was used in the late 80s, not the smaller last version. Spain adopted the Euro as its new currency in 1999, however, pesetas remained in circulation till then end of 2002 with Euro coins and notes being introduced at the beginning of 2002 along side pesetas for a transition period.
Sydney goes to Malaga, Spain. The skyline shown when she gets there is actually from Stockholm, Sweden. The sunset make all the buildings appear as silhouettes, and in the foreground you can clearly see the distinctive shape of Stockholm's City Hall.
Mexican Spanish dialogue when Sidney is in Madrid.
Marshall says that the coin is worth one peseta, but it is actually five.