What is the mileage of Toyota Etios Liva on highways and City?

Toyota Etios Liva  gives a mileage of 20.32Kmpl and 23.59Kmpl in city and highway respectively when its a diesel. On the other hand with the 1.2 Litre petrol engine it gives a mileage of 15.1Kmpl in city and 17.71Kmpl when driving on highways.