I had the 2019 kia optima for almost 4 months and the timing chain rattles in cold weather at start up every day, ever since the first day I bought it. It has 4080 miles. It doesn't sound normal even though Kia says it is. A new car shouldn't rattle in the cold at start up. It only last for a couple of seconds. Also the timing chain rattles upon acceleration which is really annoying no matter what the weather is outside. It sounds like i'm driving a sewing machine. I got so embarresed to drive my car around because of this. My car also shakes when stopped sometimes. Took this car to Kia for inspection and they say nothing is wrong. This car is cheaply made. Is this normal, even though Kia says it is?