Hi Mr. Sudipto Chakravorty,
This is in regards to your posted on the website CarDekho.com, we would like to inform you that in city conditions Maruti SX4 gives mileage of 11.5 km/l and 15.6 km/l on highways with AC. These days mileage is calculated including AC power consumption.
Yes, you can fix the reverse camera in Maruti SuzukiSx4. However, it recommended that you must buy and install the camera from the Authorised Maruti Suzuki dealer. To track the nearest Maruti Suzuki dealer please visit the link below:
It depends on the usage and maintenance, we have seen that people having cars for more than a century and having cars that have done 16 lakh Kms. So, if you maintain your car and drive it safely, you can have it with you for a lifetime.