Continuity mistake: When Nick and Javi switch shoes, the camera shot on the floor shows that the shoes they have already switched are on their right feet. When they switch permanently, they both give each other a right shoe.
Continuity mistake: When Cage backs the silver Porsche into a car while trying to escape the people "following" him and Javi, you see a broken taillight lens fly through the air. You see the back of the car when they drive into the compound and both taillights are intact.
Plot hole: When Cage and his wife and mates are going to the FBI safehouse the FBI agent shoots 2 baddies two separate times whilst Cage etc. are ascending the stairs, yet they don't hear the gunshots.