I bought this car on 2013 during my college days, also the car comes CNG fitted which my father wanted as the range of CNG is quite good and is cheaper than petrol as well as less eco-friendly. The response of CNG was amazing it gives me a good range of 250 km from full gas. The engine is very refined than other brands car, it is most preferable to drive cities but I have driven my i10 in hills a lot of times it hasn't given me any drawback yet. So it is a good car for a small family like me. The service cost of my i10 is about 4500 to 5K, which is decent. It is going smooth still and it doesn't like I am driving an old car.
Pros: Very refined engine, good space in the rear seat, good performance, good built quality.
Cons: Less mileage, little turbo lack, seats are not comfortable