In the beginning when César is driving side roads the pavement is dry. When he gets out of the car and walks down the Gran Vía the pavement is wet.
During the lovemaking session with the nude scenes, Sofia's hair keeps changing between shots.
A crew member is reflected in the car window when César picks up Pelayo for tennis.
As César runs on an "empty" street at the beginning of the film, three people can be seen. One, a man in a blue shirt, standing in the bottom right corner of the frame, and two other people on a balcony above him.