Így?
public OnPlayerExitVehicle(playerid,vehicleid){
GetVehiclePos(VehicleID[vehicleid], VehiclePos[vehicleid][0], VehiclePos[vehicleid][1], VehiclePos[vehicleid][2]);
GetVehicleZAngle(VehicleID[vehicleid], VehiclePos[vehicleid][3]);
SaveVehicle(vehicleid);
return 1;
}