is this is your first car?
i think you should go to a financial institution first and find out you borrowing options/restrictions.
then go see what you can afford to buy and maintain.
just remember, if the bank says you can afford it.. don't mean that you should buy it.
take in mind the maintenance costs that are associated with a normal car and a turbo car..
and then there is insurance.. go get some quotes...
add up the vehicle cost after your loan.. + your insurance quote and decide if that's a good investment for x amount of years.
lets just say for example...
on a 100K loan you would end up with paying 20K in interest and fees at the end of 5 years.
You would also have to make a down payment to get the actual loan.
buying a car is not like going to buy a something off the shelf..
you have to remember the costs involved etc.
Good Luck in your choice...