Tata Harrier (2023-2023) mileage varies, depending on the variant. The petrol-manual variant of Harrier (2023-2023) has a mileage of 0 kmpl. The petrol-automatic variant of Harrier (2023-2023) has a mileage of 0 kmpl. The diesel-manual variant of Tata Harrier (2023-2023) has a mileage of 16.35 kmpl. The diesel-automatic variant of Tata Harrier (2023-2023) has a mileage of 16.35kmpl. Note that the mileage figures are as per ARAI.