Other mistake: When Giosuè discovers the German boy in the metal box Guido says that his name is Schwarz (Black). The German subtitles translate the name as Schwanz (Tail or - rather - Dick), and that's how both Guido and Giosuè refer to the boy later. Even if the different naming later was intended the first subtitling was too anticipatory. (01:33:50 - 01:45:50)
Other mistake: When Guido decides to leave the camp with Giosue, he stops by the box Giosue will hide in, and says they will win 60 points if they get through the night. When Giosue asks how many points they have ("Quanti punti abbiamo?"), you can see Guido mouth " - ti abbiamo" along with Giosue. (01:40:30)
Visible crew/equipment: The camera searches for Dora whilst Guido plays music through the open window. In her room, you can easily see a cable (from a microphone or a spotlight?) on the left side of the screen. (01:42:00)
Revealing mistake: When Guido tries to escape camouflaged as a woman and is stopped by the guards the second from right prisoner cannot help laughing. (01:50:10)
Continuity mistake: When Giosuè climbs out of the metal box the door is only half open, but when the camera angle changes it's fully open. (01:54:05)
Revealing mistake: When Giosuè steps out of the metal box he walks over to a marked spot where he is supposed to wait for the tank to turn around the corner. This wouldn't have been as revealing if he hadn't been firmly looking at his mark for the last few meters. (01:54:30)
Continuity mistake: When Giosuè gets out of the metal box and the tank arrives his shadow turns by 90 degrees. (01:54:55)
Continuity mistake: Giosuè spots his mama from the tank when they go down a mountain road with rocks left and right, but when he runs over to her he crosses a lush meadow. (01:56:40)
Continuity mistake: In the rain scene after Guido & his princess are in the rain, the steering wheel becomes detached, and he holds it up, and you see hardware still connected to the steering wheel. When he puts the pillow on top of it for her to use as an umbrella, you don't see the hardware. During this scene, Guido places the pillow directly on top of the steering wheel, and in the following shots, you don't see the actual steering wheel; only the stick.
Continuity mistake: When Guido is caught in the spotlight during the liberation of the camp, he climbs down from his hiding place on the wall and falls to the ground. When the guard prods him to stand up the blanket around his waist hangs down to his feet, but when the camera cuts away and back just before he starts walking, it is several inches shorter. When he play marches for Giosuè it is hiked up even farther.
Continuity mistake: When Giosue comes out of his hiding place at the end he opens the door only wide enough to slide through. When he walks away the door is fully open.
Continuity mistake: In every scene involving rain, no one ever gets wet. Even in the scene where Guido walks Dora home and she tells him he is wet, the water just beads up on his right shoulder. Wouldn't he/his clothes have been soaked, given how hard it was raining?