Size and shape of the "breathing" trunk's hole when the two guys are locked inside.
When Kassidy comes in her car, it is raining. When we see the car from outside, the soil under the car is dry : meaning there were multiple takes.
The duo's car isn't damaged, despite hitting the robot girl.
When Sophia checks Nigel's heart rate in the beginning of the movie, she does that on the wrong side of his chest.
At 46:48, the police cars blocking off the street are visible.
Around 1:08:10 Lav mic cord visible.
When Huffy and Nard drive home with the ran-over robot girl, the camera's shadow can be briefly seen to the left of the screen.