Before getting into Sonya's car, Fury removes his cloaking mask and wig, throwing the wig to the ground. When the car pulls away, the wig is nowhere to be seen.
Sonya Falsworth (Olivia Colman) refers to Finland as "Scandinavia", a region that only includes Norway, Denmark and Sweden.
Finland is a Nordic country, a term used to describe Scandinavia, Finland, Iceland and the Faroe Islands.
The passport Fury uses as Mr Kerhonen has several errors on it in addition to a made-up surname which would have easily been spotted at the border control.
The country name is spelled incorrectly in Finnish as SOUMI instead of the correct SUOMI.
The passport issuer/authority is also misspelled as POLLISI instead of POLIISI.
The social security number is too long as in Finland it is formed with six digits from the date of birth, a marker for the century and then three running digits and a control character. Fury's code is made of seven digits, a dash, four digits and a character. A better code for Mr. Kerhonen based on the information in the passport could've been for example 201050-899V.
Rhodey Tells the President England supports of the U.S. Calling Britain England is like calling America Texas. England, like Texas, does not have an army or navy, or sit at the UN as examples. What Rhodey should have said is that Britain supports the U.S.
When Fury enters the safe house location in Brinton, he unlocks the door by turning the key clockwise. Door locks of that era could only unlock by turning a key counterclockwise.
The levels of the special effects are wrong. The shadows of the 'Groot arm' specifically are considerably darker than the shadows in the rest of the frame. (A simple Lighten overlay would have ensured proper blending.)