Character mistake: At end when Jake has the 1911 single action automatic covering Alonzo, it is not cocked. Since the 1911 is single action, he can't fire it until he cocks it which he does just before he shoots him in the butt. Makes no sense not to have it cocked the whole time he has it trained on Alonzo.
Continuity mistake: The first time Ethan apprehends the green car for possession, the person in the passenger seat is a woman in all exterior shots. From the interior it's always a man.
Continuity mistake: After Ethan and Denzel get away from the shoot-out near Sandman's house, they pull onto the side of the highway, under an overpass. The close up shots of the actors show sunlight on their faces. Wide shots of them have them in the shadow of the overpass.
Continuity mistake: When Alonzo shoots his partner in the vest twice, he injures him on his right side. In the next screen, he is on a stretcher holding his left side.