overpriced for performance

pros - safety features - ABS, 6 airbags (4/5) ride comfort (3.5/5) driving ease in city and highway (3.5/5) stability at high speed (i have driven upto 140kmph) 4/5 looks 3.5/5 quality of music system 3.5/5 (better than maruti swift / brezza) AC (4/5) cons - mileage - 12-14 (at highway @100-120kmph) - despite complaints and some resetting by kusalava motors Guntur personnel, it didnt improve (from 12 to 14). acc. to Kusalava person if speed is >80 average comes down. Although it is understandable, yet is it so much lower than claimed mileage ie 17.2? engine error signal on front panel (orange) - Kusalava motors told that it was some display error rather than actual problem with engine - once they did something to correct it - however, it has reappeared.