How much current does it draw at 12V?
I'm pretty sure it draws 2 amps of current based on similar looking motors online. It was taken off a Mattel car that kids can drive around in. I have another one like it taken off of an electric tire pump.
Are you sure it gets enough current at the base ?
I've giving it 5 volts from the arduino.
What numbers should I look for on a mosfet if I go with that?