I went to dealership they said it was knocking sound from throtle they tuned it and sound was gone. They said you should use HOBC otherwise it will happen again. KIA engine is too sensitive to poor quality oil.
I think company have not properly tested the fuel here in pakistan before manufacturing the engine. Long story short they charge me 2900 RS for tuning by saying this malfunction doesn’t comes under warranty because it happend due to poor quality fuels so it is not the manufacturing fault lol. It was really disappointed. KIA service center is very expensive but if you take your car to non authorise dealer for service you will loss your warranty.