Factual errors: When Arkady's car stalls on the bridge on the way back to Moscow, the wipers are still running. As Arkady repeatedly tries to re-start the car, we see the wipers still running at full speed. In real life, each time he tried to restart the car, the wipers would slow from the drain of battery power away from the wipers to the starter motor.
Anachronisms: When Arkady and Iamskoy are talking together in the sun-room of Iamskoy's dacha, the air is so cold that the men's expelled breath is clearly visible as vapor clouds. Yet in many scenes in the movie when the air would be much colder, most notably when Irina is being chased through the streets at night, no-one's breath is visible as expelled clouds of vapor.
Continuity: Renko's very obvious black eye almost completely disappears in a matter of several minutes.
Continuity: When Arkady stands up to leave the hotel bar, the bowl of peanuts is sitting on the arm of his chair, but after he leaves, Kirwill reaches down for the bowl as if it were sitting on the floor.
Revealing mistakes: During the final scene pine martens were used for sables, clearly identifiable by the yellow fur at their chests.