THE VEHICLE HAS APPROXIMATELY 5,500 MILES ON IT AND IT WAS BEING DRIVEN 10-15 MILES AN HOUR ON A CITY STREET. WHEN TRYING TO COME TO A STOP THE BRAKE PEDAL WENT TO THE FLOOR AND WOULD NOT STOP THE VEHICLE. IT HIT ANOTHER VEHICLE AND AFTER PUMPING THE BRAKE PEDAL THE BRAKES RETURNED TO NORMAL. THERE IS A CURRENT RECALL ON THIS MODEL AND YEAR TO REPLACE THE BRAKE BOOSTER BUT IT DOESN'T CURRENTLY INCLUDE THIS VEHICLE'S MANUFACTURED DATE. IT'S HYUNDAI RECALL NUMBER 157 AND NHSTA SAFETY CAMPAIGN #17V063000.