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Since I would be paying on it for a few years, I would wait. Doesn't make sense to buy something and then trade it in later, because that's what I would want to do if I bought a car I didn't want. If safety is a concern, buy a minivan outright for cheap to get you by.

^^^ agreed. Get something that's structurally sound until you're ready to buy your "real" vehicle. Keep the car you buy now as a backup for when (not if) the spring purchase needs repairs or maintenance.