THE GASOLINE TANK CAP IS DEFECTIVE. THE CAP IS METAL AND THE GAS TANK IS PLASTIC. AFTER SOME USE THE PLASTIC LIP OF THE TANK GETS WORN OUT AND THE CAP DOES NOT LOCK. THEN GAS SPILLS OUT AND THERE IS A DANGER OF FIRE AS WELL POLLUTION. VERY UNSAFE. SYM SHOULD REPLACE TANK OR REPLACE SCOOTER WITH ANOTHER, SAFE VERSION.