Hyundai i20 comes with three engine option i.e. a 1.4L, Gamma AT petrol, 1.2L Kappa PL petrol and 1.4L, CRDI diesel engine.
Hyundai i20 which is powered by the 1.4L, 1396cc Gamma AT petrol is a very fuel efficient car with DOHC and MPFI fuel system. This In Line type petrol engine equipped with four speed automatic transmission gearbox, produces a maximum power of 100 PS at 5500rpm and a Maximum Torque of13.9kgm at 4200rpm.
Hyundai i20 powered by the 1.2L, 1196cc Kappa PL Petrol five Speed manual transmission gearbox also performs with stimulating effect and gives better performance. This 1.2L, In Line petrol engine delivers a maximum power of 80 PS at 5200rpm and a maximum torque of 11.4kgm at 4000rpm.
Hyundai i20, with 1.4L CRDI diesel engine with new six speed manual transmission gearbox performs excellently and produces a maximum power of 90PS at 4000 rpm and a maximum torque of 22.4kgm at 1750~2750 rpm.
The powerful engine of the car is capable to pull up it at hill stations.
For more information about the car please visit the given link as above.
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.
Click here to find the nearest Hyundai service centre by selecting your city in the drop down list.
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.