BRAKES DID NOT ENGAGE WHEN BRAKING. WAS IN BUMPER TO BUMPER TRAFFIC LET CAR IN FRONT OF ME TO GO A 1.5 CAR LENGTHS BEFORE I TOOK FOOT OF THE BRAKE NEVER HIT THE GAS COASTED UNTIL I WAS 1/2 A CAR LENGTH FROM THE CAR IN FRONT OF ME AND WENT TO HIT THE BRAKES AGAIN AND IT DID NOT ENGAGE CAUSING ME TO HIT THE BACK OF THE VEHICLE IN FRONT OF ME. MEANWHILE THE AIRBAGS DID NOT DEPLOY EVEN THOUGH IMPACT SPEED WAS 2 MPH I BELIEVE THE AIRBAGS SHOULD HAVE GONE OFF WITH HOW FAR THE HOOD GOT SMASHED.