Fuel Efficient Car

I bought WRV Alive Edition in Nov 2018 only due to Brand Value of Honda. But when I started drive the car...I find following things.. * Ample space * Good interior * Good Control..... * Honda Brand Value * Nice looking car and good for family. But if see the technical specifications.... Then car has linear torque delivery but engine is too noisy. The only best thing about car is its mileage. # initial 200 km of driving in city and highway 40:60 (less traffic in city and with 2 people) I got 21.4 Kmpl (without ac & normal driving) # again 150 km of driving in city and highway 20:80 i got a whopping 27.5 Kmpl. (Without ac and with 2 people& eco driving).