I have driven this car about 23000kms since I bought in August 2018. I have done many long drives about 500-600kms one way and I can say the car is pretty reliable and has great FE, reaching up to 21kmpl(tank to tank). The engine is ultra-smooth and probably the best part in this car.
Coming to the cons- Except engine, the car has the worst build quality. I completely mean it. Even a small pebble on the road can dent it's outer shell let alone any minor accident. It's a pretty feeble product on the outside and starting from door, roof,bonut everything feels so a week so much so that even a small accident is sufficient to cause maximum outer shell damage. Plastic quality is substandard and fit and finish is very poor. After 2 years I can hear cabin noise coming from multiple places which Maruti couldn't fix completely. In my opinion, it's highly regrettable and worthless to buy this car if we don't consider the quality of the engine. For sure, This is not for people who have safety in their mind as first preference.