At the end of the movie Ludo asks the waiting taxi drivers for a special service. When he rides with the last cab next to the others in the next scene, the first two drivers have changed their waiting positions.
In the last scenes, when passing the row of cab drivers they are on Ludo's right hand side. When Ludo and Anna are leaving with the unfriendly cab driver the passed cabs are turned 180°.
After having broken through the glass roof and landed on the table Ludo should be spiked with shattered glass falling with him from the roof. But in the close shot we can see him completely unharmed.
Hammers are not used in actual German courts.
In on of the scene in which Ludo and Anna are shown as kids, Anna opens a Coke can which content sprays in her face.
Based on the fact that Anna is called to be 29 in the movie the review might show her in the eighties. But the can with it's recent shape and opening seal hadn't been released in this time. The cans (in Germany) had a straight shape and seal which could have been torn off.