almost 4 years old now, and the engine started to make this clunky noise since last winter, it gets quite cold up here, so I was not sure if the cold affected the engine performance. I had a semi annual maintenance and check up, everything came out okay, but the noise still didn't go away. And since we just came back from a long trip, the noise is getting worse. Is it suppose to be like this as the car ages, or is there something seriously wrong. I had a Dodge Neon before this car, the same noise was there, and then one day the transmission blew out on me, and that was it for that.