Hyundai i20 N Line (2021-2023) mileage varies, depending on the variant. The petrol-manual variant of i20 N Line (2021-2023) has a mileage of 20.25 km/l. The petrol-automatic variant of i20 N Line (2021-2023) has a mileage of 20.25 km/l. Note that the mileage figures are as per ARAI.