When deciding whether or not you should buy a new vehicle or keep your current one, consider the age and condition of your current vehicle and whether the car you have now is meeting your needs. If you find that your car is unreliable or you're constantly making repairs, it's time for a new car. If your current car is in decent shape, that puts you in a position to plan a bit more for your new car by beefing up your down payment before making the purchase.