What would be a perfect car? 10 pts for best answer?

Alright, I have a 2004 bmw 328i. I love the car but its so expensive to get fixed. Im a college student majoring in pre law ( 20 yrs old ) I need to find a reliable inexpensive car to keep until I graduate in 2015. My beamer is 100.00 for an oil change, 200.00 for each tire, everything is just way over priced. I need something sporty, roomy and comfortable, affordable so i can maintain it, but not something that sticks out a lot ya no? If anyone has any ideas please let me know the make and model and it will be greatly appreciated