Gorgeous and stylish car

I brought Verna SX plus auto-shift model, the looks very gorgeous and styling looks also very good and engine performance 128 hp which give very good driving pleasure it can attain three-digit speed very fast and the cabin is so silenced up to 80 kmph but after that I can hear sounds of engine and air, the most important thing I like is cornering lights in nights at helping lot in curvy roads. The sunroof is also there but I am using very less because of our climate, AC is working flawlessly and music system very good with Apple CarPlay I am using it and most importantly the GPS navigation very accurate in turn by turn navigation but it needs an update. The Milage I am getting is 18 km in crushing mode at 80 to 90 mph .. but if we press more than 130 kmph the mileage drops to around 14 to 16, for 150 and 160 kmph the milage is 14 per liter. I have some issues with engine clusters mostly around 40 to 60 kmph speed but the service centre people can't find anything and they are not able to listen to those clusters (some noise from the engine at that speed). Some negatives are there are no ventilation seats, no Hyundai connect. no on-off button, no smart key access, no smart boot opening even they say it's a top-end model.