 I bought this car brand new with 7 miles on it.  My 2007 Kia Optima has went through four different automatic transmissions. Kia will refuse to fix their defective car until you threaten legal action and then all the sudden they agree to pop in yet another transmission.  My head gasket has blown twice and the car leaks oil and transmission fluid.  I'm afraid to turn the car off sometimes because I seriously wonder if the thing will blow up the next time because it's so poorly made.