Factual error: No handgun shots can throw a police officer through the air halfway over a diner. That's just pure Hollywood fantasy (Mythbusters even proved this using all kinds of guns).
Factual error: The Chicago Fire Dept fire truck is red but the real Chicago Fire Department colors are black over red. (00:59:20)
Factual error: When Paul hits Annie in the head with the 15 pound typewriter, she is only incapacitated for 2 or so seconds and has no bruising or bleeding on her face. One would think a typewriter this heavy would at least cause some type of injury to her face, such as bruising or bleeding to her face and would incapacitate her for longer than 2 few seconds.
Factual error: At the beginning when one of the thieves steals the red Porsche, he opens the car with a tool but turns it on without the key in just one second.