Hyundai i20 offers the mileage in city roads around 14 kmpl while on highway it gives around 17kmpl mileage ..... it is the premium hatchback model that comes with new stylish design and equipped with lots of advanced features ..... but its price seems bit higher for a hatchback segment car as its all three variants are priced in the range of Rs 4.79lacs to Rs 5.81 lacs ...... for more details about this car along with its prices in your city you may visit the following link ...... Hyundai i20
Initially, Hyundai Elite i20 Magna comes with a petrol and diesel engine but a CNG kit can be fitted with the one which has petrol engine. You will have to sacrifice with power to get more fuel economy and if you convert a petrol car into a CNG car, you may loose the warranty on the car and resale value of CNG cars is lesser than petrol cars. It is always recommended to get the CNG kit fitted from the authorized service center so that you can avail the warranty services as well. Moreover, the performance will depend on how the car is driven and maintained.
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How much fuel goes into a car varies on a lot of factors. Now you haven't mentioned how many km did you drive post the low fuel warning light as that could also determine how much fuel goes into the car. Even though the manual says that the tank capacity is 45 litres, the amount can vary by a small margin, give or take 2 or 3 litres. Also filling fuel in the hot day or in the night also makes a difference considering fuel expands during the hot day and contracts when the temperature is cooler. All said and done, make sure you fuel up within 3 to 4 km after the low fuel indicator light pops up.