Hello there,
I'm making an RC Car and the problem I am facing right now is that the motors don't work at full power.
I've got 2 DC motors connected to L298N Motor Driver which is connected to Arduino UNO via a GND and 5V pin. I'm using 4x AAA batteries to power the whole system right now.
Can anyone tell me what to do now??? 
NOTE: I'm new to arduino and all of this electronics stuff....
The 298 will probably drop a couple of volts.
You could add batteries.