My advice is to keep a car you can afford. When you're in university, you don't want to be worrying about your car and money etc... You gotta focus on school and you don't really need the distraction of worrying about finances.
Thats what I would do.
2006 Range Rover Sport, 2007 Toyota Yaris, 1996 Chevrolet Cavalier, 2002 BMW 330i - SOLD
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