First decide the purpose for buying the car.
For a City type, you may go for the Small cars like Maruthi 800, Maruthi Alto ,Maruthi Zen,Tata Indigo, Hyundai Santro Xing, Maruti WagonR type of cars would be better.
and for long Travel purposes you will need a sturdy one to carry your luggage, you may opt for Long journy then go and look for cars like Scorpio, Qualis, Tata safari, Sumo type of cars would be better suited.
If you are interested to earn money from your car, then models Like Sumo, Hyundai Santro Xing, Scorpio, Qualis, Tata safari will satisfy.
any way first decide what is the purpose and need for buying a car.