As I am a new driver I get good mileage. 17 to 19 km/l. Engine performance is good. No such noise inside cabin. Windows glass vibrating when half open @ rough roads. Outer build quality should improve. Dent/ crack easily observed@ very minor touch. Specially front/rear bumper. Plastic quality should be improved without any cost hike. As at present several competitors available like magnite/Tribber/Punch.
These three are provided very competitive price. Most below middle class family go with wagonr due to only after sales service & good refined engine.