Good product apart from mileage

I purchased tata Nexon xZA+ in April 19.overall performance of the car is good as it is my first car. People having experience of driving manual car may experience leg while gears are changing automatically. The 3 different modes are good and you will enjoy driving on hills and highways at Sport mode. I drove to Goa from Mumbai overall it was a good experience but faced problem in AC as it began heating after 200 KM in the day time. the most disappointing featured is mileage. It only gives 13-14 in City and max 16 at highways. I have driven around 8000kms. Overall good product of TATA.