Continuity mistake: In the car chase, the blue van is hit and the left side headlight dislodges and is dangling down for most of the chase. But in one far shot where the van is taking a turn, it is suddenly switched to the right headlight that's dangling. (00:23:00)
Continuity mistake: When John gets out of the taxi, the window is open. When he closes the door, the window is shut. (00:12:00)
Continuity mistake: When we first see John, he is in the police shooting range. He has on protective head phones which he takes off and sets on the table in front of him as the other cop comes in. He and this cop talk about Jack, and when they finish, they shake hands. The mid range shot of them shaking hands shows the head phones still on the table. It then cuts to a far shot and now the head phones are gone while the two finish the hand shake. Careful which table you are looking at, as the angle makes it confusing. The head phones were on the table with the red thing on its left side. (00:06:50)
Revealing mistake: When Yuri Komarov is on the phone with his daughter, the screen on the phone is the dial screen rather than the on-going call screen. (00:34:10)
Revealing mistake: When the armored truck flies through the air and smashes into a concrete pipe that is being hauled by a yellow truck, there is a shot from in front of the yellow truck. You can see there is no driver. (00:28:55)
Visible crew/equipment: After John stops the blue van and tries to confront Jack, Yuri takes it upon himself to get out. As he opens the door of the van, a camera and some crew equipment is reflected in the door's window for a brief moment. (00:19:05)
Continuity mistake: When John and Yuri are standing in front of the crane and talking about their children, John's arms go from crossed to by his side, back to crossed a couple times between shots. (00:39:35)
Continuity mistake: In the taxi, the driver says the line "I sing all the time". As he is saying this, there is a shot change. The shot from in front shows his right hand is barely visible next to the steering wheel and semi low. But the shot from behind shows his hand higher with thumb sticking up above the steering wheel. (00:11:40)
Continuity mistake: In the car chase near the start, the blue and white cars hit bumper to door. When the tank type car hits them they are end to end. (00:22:00)
Continuity mistake: Just after John says "Jack! I'm not done talking to ya!" It shows the blue van backing up and turning around. The first shot shows its headlights turned on, but the next shot they are off. It happens again later when the van is spun and pinned to the front of the armoured truck. (00:22:20 - 00:27:20)
Chosen answer: The ring road around the center of Moscow.
Friso94