IRIZ CVT GEARBOX TRANSMISSION IS VERY SMOOTH AND NO MORE JERKING ANYMORE ALREADY。LAST TIME U TEST DRIVE IRIZ, U FEEL GOT JERKING IS BECAUSE LAST TIME U WERE DRIVING NEW CAR WHICH STILL IN RUN-IN PERIOD。 DONT SAY IRIZ GEARBOX IS WORSE THAN PERODUA GEARBOX。NO COMPLAIN, I AM HAPPY TO OWN THIS CAR