Its not even 6 months & so far I am very happy with the performance. On the highway it definitely gives 15 KMPL but within city it is a bit low.
I drove the car from Udaipur to Gurgain i.e. 664 KMS in one day & when I reached home I was not tired at all. In fact I could have driven more. The more to drive the more you want to drive. SX4 is addictive.
For city driving... would suggest a smaller car like a santro / wagon R but on a highway SX4 is the beast one cud look up to. Superb performance vehicle! Indeed a driver's car.
Kudos Maruti Suzuki for creating the all in one marvel.
Cheers!