The car comes with a company fitted LPG kit in the current selling Sportz model and you can get the same kit fitted into your car with ease. The fitting of a CNG or LPG kit for the aftermarket shops would cost you nearly half the price of the kit which would be available in the service center but the quality and fitting of the kit from authorized service center would be much better than that of the aftermarket kit. You can know the exact price of the kit by calling your nearest Hyundai service center and inquiring about the product. The measures to be taken with the kit would be explained in detail by the representative of the service center.