In the shot immediately after the gunfight (as the Zürich police approach), a large orange "construction zone" sign can be seen behind Oded Fehr. Such signs do not exist in Switzerland (or, for that matter, in Europe). They are exclusive to North America.
Several times, you can see a Swiss car number plate. They show different mistakes:
a) The front plates for cars have only one line of characters and numbers.
b) The rear plates have two lines, including small shields representing the flags of Switzerland and the canton.
The silver VW who brings Annie Walker to the safe house shows a rear plate on the front of the car, without any shields.
The answer to Annie Walker's question if they have any with the lavender crystal is mistranslated. Fatima says in German, "Wir haben viele feine Schweizer Uhren," which translates to, "We got many fine Swiss watches." The subtitles say instead "The one with lavender crystal" which doesn't make sense with the next sentence where Fatima asks if it has to be an American watch.
When Auggie Anderson welcomes Annie Walker in Switzerland, he says "Guten Morgen" in German language. In the German synchronization it was translated to 'Grüezi Gott' - something, that no one in Switzerland would say. You welcome an unknown person with 'Grüezi'. In Germany or Austria you could say 'Grüss Gott'.