There are few things I would like to share with you. I am an owner of TATA INDICA ZETA 2006 model petrol and I find it in very good condition. I get an average of 14 kmpl in city and 19 kmpl in highway. It all depends on the maintainance and servicing the car at regular intervals.

I suggest you that you use branded engine oil, fuel pump and air filter. Poor pick up you are experiencing may be because of clogged fuel pump or leakage in the fuel tube or clogged air filters. I suggest you that you go an authorized TSTS MOTORS service station and get your car fully checked.

I suggest you use Castrol Magnetic GTX engine oil which will give you better pick up and also increase the performance of the engine. Use TATA MOtors recommended Air Filter

Check the fuel pump and fuel tube for leakage. Get it serviced at the earliest.

If you find any problem please feel free to contact me in the mentioned email subramanian.kartik@rediffmail.com