Tata Nexon (2020-2023) mileage varies, depending on the variant. The petrol-manual variant of Nexon (2020-2023) has a mileage of 17.40 kmpl. The petrol-automatic variant of Nexon (2020-2023) has a mileage of 16.30 kmpl. The diesel-manual variant of Tata Nexon (2020-2023) has a mileage of 22.40 kmpl. The diesel-automatic variant of Tata Nexon (2020-2023) has a mileage of 22.40kmpl. Note that the mileage figures are as per ARAI.