CAR SUDDENLY LURCHED FORWARD (WHILE MY FOOT WAS ON THE BRAKE APPROACHING A STOP SIGN) AND STRUCK THE VEHICLE IN FRONT OF ME ON JANUARY 6, 2012. THIS PROBLEM OCCURRED AGAIN IN DECEMBER 2012 AND JANUARY 2013, I.E., CAR LURCHED FORWARD WHILE DRIVER'S FOOT WAS ON THE BRAKE WHILE APPROACHING A STOP LIGHT/SIGN. THE LATTER INCIDENTS DID NOT RESULT IN ANY ACCIDENT OR INJURY.