Trigger not detecting tag

When a car passes though the trigger only my one should debug but the other cars with different tags debug and i do not know why? here is my script

 #pragma strict
 var Lap: int;
 function Start () {
     Lap = 0;
 }
 
 function Update () {
     if (Lap ==3);    
 }
 
 function OnTriggerExit(other : Collider)
 {
  if(other.tag == "Player");
     Lap++;
     Debug.Log("Passed though");
     
 }