Hyundai Motor India — Car mileage

Address:

Lucknow, Uttar Pradesh, 226010

Dear sir
I purchased a hyundai i10 magna 1.1, 2017 model on 15.01.17.
My car is not giving proper mileage, its giving an average of 10kmpl, thus consuming too much fuel.
At the time of purchase the dealers promised to give 19kmpl average 7 even hyundai promise so, but in such a short time of 5 months we are facing problem.
We even complaint about the issue to the dealer from where we purchased, he said what is written is not what in actual, this is a clear case of making fool of customers.
I am really disappointed by hyundai. Such a big name & such poor quality.
I want my issue to get ressolved asap.
Looking forward

Sandhya srivastava