Good car bad mileage

Bought in Nov 2019. Good service by Vasu Arjun Hyundai Moradabad. Great comfort ride almost 600 km in single stretch comfort and riding quality is superb. Look wise it is comparable to many upmarket card in India. One free service has been done that's was fine. Pros 1. Good Handling 2.Good performance from engine 3.Ac is good 4. Seating is comfortable Cons 1. Mileage is only 12 km/l mixed driving conditions. 2. Not meant for country side road 3. Initial pickup is not up to the mark Overall car is good but mileage is downside of this car