Other mistake: Major Turner tells Reacher that the men Parasource killed were shot twice in the back of the head. During Prudhomme's telling the images show the downed soldier on his back. The other is shown being shot and falling on her back. Then the two kill shots each. They couldn't have been in the back of their heads.
Other mistake: Colin Salmon in Box Command introduces himself to Banning as Chief Inspector. However, the rank on his shirt is of a Commander rank.
Other mistake: Mateo shows the tram ticket to Maggie; date and time (March 3, 2016, 13:23) are not valid to prove an alibi for a murder happened at the end of February at quarter to 1 pm - not when the person said that they already were at the location where the tram supposedly took them. (00:51:40)
Other mistake: Misty's car at the beginning of the movie crashes into the house presumably breaking through the perimeter wall, certainly does smash through interior walls and furniture, but in the living room it still has every single light, including the side ones, completely whole and undamaged.
Other mistake: Kevin Costner is billed in the credits as "Jerico Stewart." His prison file though spells his name everywhere as "Jerico Steward", with a D. (00:12:00)
Other mistake: When Bob Stone is at Calvin's office, and they get confronted by Pam and agents, Bob Stone throws a flash bomb, pushes Calvin in the mail basket towards the window, shooting at the window, it shatters before they actually go through it when jumping out of the building.
Other mistake: The movie poster shows a reflection of a $100 bill on the lenses. The bill should be flipped.
Suggested correction: Since this isn't part of a scene in the movie, it's not a mistake. It's just a stylized image. It would be no different from pointing out a group of people superimposed over each other or appearing larger than big objects they're next to.
Other mistake: At the very start, Vee opens Chrome but the window that appears is Safari. (00:00:50)