In hotel's underground garage, when Amy is searching for an escape vehicle using fobs in the valet key box, the last and closest car she tries is an Audi, by the large grille emblem, but in the next and subsequent scenes she is driving a BMW wagon.
(at around 50 mins) Amy lies down on her left side on a sofa in the Turkish immigrants' flat she and Ben are hiding in. However, she was grazed by a bullet on her left arm in the hospital fight scene earlier, and her wound would have precluded her from being able to put any pressure on her arm, much less lie on it.
When we first see Ben, he is getting dressed. You see the scars on his back as he is putting on his button down shirt. In the next shot you see him dressed and can clearly see he has a T-shirt on underneath.
When Amy is in the hotel lobby, the same extra (lady in long coat, carrying a purse in one hand and pulling a hardshell yellow suitcase) walks by twice; once before Amy's dad goes to the room, a second time when they show Amy during the fight in the hotel room.
One of the scenes (when Ben has just discovered his entire company has disappeared) is supposedly shot in Antwerp. However traffic light posts are painted red and white indicating the scenes weren't filmed in Flanders where traffic light posts are black/yellow. Googling a hotel name in the background reveals the scene was actually shot in Brussels.
During the bag drop-off at the underpass, the scene was filmed in the United States rather than in Belgium. The street signage design attached to the underpass bridge is unique to American streets. The Mercedes-Benz S-Class car is US-spec.
The car crash supposedly happens whilst leaving Brussels when they actually drive in to the city. When the car is on its side roadsigns point to "Mechelen-Noord", "Mechelen-Zuid" en "Mechelen-Centrum" (Mechelen North, South and City Centre) leading to believe these scenes were filmed in Mechelen and not in Brussels. In reality, the scene was shot in Mirabel, Quebec, Canada. The road is Highway 50, near what used to be Mirabel International Airport (now closed), which can be seen in the background (black building with multi-level parking).
At around 31 min when Ben and Amy were escaping cops Ben was talking to his daughter on non English language, and later at around 35:30 Amy said that he's speaking like Russian and then he said it's Croatian but that is not Croatian language.
(at around 46 mins) The restaurant where his daughter, Amy, went outside to make a phone call. This telephone booth and the restaurant are distinctively American in spite of the characters being in Belgium.
While still (ostensibly) in Langley, Anna Brandt picks up the 'phone and tells an operative to 'alert our Consulate in Brussels, and get a local team ready'-Brussels is a capital city, it has an Embassy, not a Consulate.