[RedFusion]

The engine is toggled when you change state to driver, not when you enter the vehicle..
OnPlayerEnterVehicle is called as soon as the player tries to enter it.

pawn Код:

OnPlayerStateChange(playerid, newstate, oldstate) 
{
 switch(newstate)
 {
  case PLAYER_STATE_DRIVER:
  {
   //This on the other hand, is called when you're in the car as a driver
  } 
 }
}