Plot hole: Turner locks himself and Ashley in her car so he can confront her. However after his speech, Turner somehow manages to open the door without unlocking it.
Suggested correction: It is accurate that Turner can open the door without unlocking it, all modern cars can be opened from the inside whether the door is locked or not. Ashley never actually tries to open the door, she reaches for the handle and stops once Turner locks the door. Since the movie never actually shows Ashley try to open the door, this doesn't count as a plot hole. If anything this is a character mistake, Ashley should be well aware that she can't be "locked in" a car that new.
Plot hole: When Kale and Ashley escape from Turner, Kale tells Ashley to make sure the police come. But, when the cop comes, Ashley does not seem to have told him about what just happened, he gets killed before he can request backup, and then the police arrive right after Kale and his mother walk out the garage after defeating Turner. Why did she not inform the cop and wait all that time to call the police?
Plot hole: When Kale and Ashley are hiding in Kale's dad's office before Turner breaks through the door, the power goes out. Kale's ankle bracelet goes off when he and Ashley cross the line. However, considering that at the beginning of the film Viola Davis explains that the police will come immediately if the machine that traces the bracelet is unplugged, the bracelet should have started when the power went out.
Plot hole: There is no way Turner should have been able to fool Kale into thinking that he was the club girl, due to obvious differences in his physical appearance to the club girl. Such as his much blatantly larger size and height, especially if he needed fit into the black dress she was wearing (and to top it off, it does looks very much like the actress when "she" gets into the car).