TL*THE CONTACT OWNS A 2010 TOYOTA RAV4. THE CONTACT STATED THAT THE VEHICLE ACCELERATED SUDDENLY ON TWELVE OCCASIONS. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FIVE TIMES BUT THE FAILURE COULD NOT BE DUPLICATED. THE LATEST OCCURRENCE RESULTED IN THE VEHICLE JUMPING THE CURB AND HITTING A TREE. THE FAILURE ONLY OCCURRED WHEN THE VEHICLE WAS TRAVELING AT A SLOW SPEED OR COMING TO A STOP; THE VEHICLE WAS DIFFICULT TO STOP. THE FAILURE MILEAGE WAS 300 AND THE CURRENT MILEAGE WAS APPROXIMATELY 71,000.