Not fit for dusty road and low fuel economy shall keep away customer

This car can ran at speed of 180 kmph with ease and have excellent looks. But Fuel economy is below expectation, My car's fuel economy as recorded is as 1. From 27 Km to 368 KM was 6.5 Km per litre, 2. From 368 Km to 789 km was 11.1 kmpl, 3. from 789 km to 1407 km was 12 kmpl,  4. from1407 km to 1869 km was 10.96 kmpl and 5. from 1869 to 2220 km was 12.6 kmpl. 

Since, air blower is not fitted with dust filter, on dusty road, Sand and dust directly enter through air blower.

Also in first servicing, I find difficulty in getting Push rivet to fixed lost/Damaged mud guard and wheel cover/chamber. I had to go to private vendor to get those rivet.

Holder of clock and thermometre on top of desk board is loose and giving out some sound.

I doubt the lock of luggage box may not be I key but it give a warning when open without pushing on button of remote key.

Every this is okay.

Style okay, Fuel economy is below expectation.Air blower is not fitted with dust filter, AC /Warmer affect front side more effectively