WHEN STOPPING ABRUPTLY, GOING AT 15-20MPH ON A MAIN STREET IN STOP AND GO TRAFFIC, NO SNOW OR RAIN, THE BRAKE PEDAL PUSHES BACK AS IF SOMETHING IS STOPPING THE PEDAL FROM GOING DOWN, IT MAKES A LOUD GRINDING NOISE, AND DOESN'T STOP THE CAR LET ALONE SLOW IT DOWN. THIS HAS HAPPENED TO ME 3 TIMES ALREADY, ONE RESULTING IN AN ACCIDENT! I'VE ONLY HAD THIS CAR FOR MAYBE 4 MONTHS AND I DON'T FEEL SAFE AT ALL.