Tata Nexon Petrol AMT - Worst car for Mileage in its segment. Don't go for this.

i bought XZA+ petrol version and now it has been 6 months 6400 kms run. overall, the car is very good in terms of its power, handling & controls. But the worst part for AMT is its mileage. i am getting max 9km/lit in city drive and max 11km/lit on highways. This is so poor. i raised complaints many times to dealership but its of no use. received typical TATA responses. i was surprised when dealership service technician asked me not to drive car in city if i am getting average below 9km/lit. this is what TATA still holding their name as bad service providers. I took this point within the company but there also i got disappointing answers and they tried to convince me how the product is good. i am really fed up buying this car as till the time i complete 6000 kms of run, my expenses on petrol were 40k+ :( sometimes i feel i bought mini tata truck and not a car as its always takes me to petrol pump. My sincere opinion is - if some one buying Tata Nexon AMT Petrol version, please please please do not go for this, its the worst mileage Car in this segment and even more worst service you will get.