Factual error: At the beginning, when those guys robbing the gun store blow Robo's car all to hell, it bursts into flames before he gets out. If he were in the fire, his human face would burn off, being regular flesh.
Factual error: It's highly unlikely that any military police from another country would be allowed entry into the U.S. to search for a deserter of its military. In any case, the illegal alien would just hide here under the radar until found by ICE or the police and then deported back to his or her country.
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.