In the scene where Sam picks up Mikaela, Bumblebee seems to break down. After Mikaela decides to walk, Sam gets Bumblebee to start working again. Sam jumps out of the car, shuts the hood, gets back in, and shuts his door. However, Mikaela's door, which she didn't shut after getting out of Bumblebee, is now closed.
I'm not a pirate, so I don't have any pictures of this.
In the same scene, Mikaela is looking under the hood and comments about how the Camaro has a double pumper carburetor, when the engine clearly has fuel injection.