Hi,
only option to register car on your name is to obtain resident visa first, and then you can do it. Transfer tax is 5% of estimated value (they have tables to calculate this). Registration for used car, engine until 2l, is around 320 euro, for bigger engines it is twice more, for smaller engines cheaper.
You can always keep the car on previous owners name, and to drive it with authorization, like most of the people does here (locals and foreigners, no body wants to pay this 5%).
