Right before Captain America is thrown from the trailer, the road has two lanes and one emergency lane (on the right side). After he has landed the road has an emergency lane on both sides.
In Germany, road signs are normally fixed on the right side of the road.
Walker's sideburns extend well below the bottom of the ears in violation of U.S. Army grooming policies.
The country road depicted as being near Munich (two lanes, one direction) is of a configuration not used in Germany (country roads always go in both directions or have the opposite lane located very near).
The license plate of one trailer reads "MK Ä5012". This is invalid as an umlaut like Ä must not be used in the second part of the plate. Additionally, there must be a space between the Ä and the 5012 to separate the second from the third part.
The car on which Captain America is thrown has an invalid German license plate (02 57 ZRJ).
When the bad guys get to the shelter, the doors are plastered with stickers reading "Wir kaufen alte Autos" ("We buy old cars") or "Erhalten Auto-Probleme" ("Do you have car trouble"). The set decorator went a little nuts here as nobody would put such advertisement stickers inside a building on doors. Additionally, some of the German sentences were translated literally from English which does not work.
Bucky says that he read "The Hobbit" when it was released in 1937. However, that was for the original British release, while the novel was not published in the USA until 1938. That is of course not counting that Bucky could have somehow learned of the new novel, which was drawing excellent reviews in Britain, and got a copy as an import or from a friend from there.
At 22:12, Walker's jaw keeps moving but he has finished speaking after he says the word "Steve".
When Bucky smashes into the back of the first truck's trailer, he does not seem concerned that the driver of the second truck, directly behind him, will see him.