 The 2015 Kia Optima rode very smooth and I truly enjoyed it. When I first purchased it I enjoyed the car. I drove it home from the dealership and it kept pulling to the right. So, I take it back to the dealership and they said to take to service. I take it back to the service and they were to put it on the machine which I truly doubt it. Because it is still pulling to the right. It is also hard to keep in the road. My next problem is that the engine roars loud and it shakes. I have taken it to the service department and all they do is drive it. The next thing is "I can't duplicate the problem". I also have had a sour smell coming from the air condition. But the service department keeps saying it doesn't have a smell. I paid 89.00 to have it serviced for the smell and later they realized that it did have a smell. so that gave me a oil change coupon instead of giving me my money back. It took 3 times for them to actually take care of this. The transmission is another problem that I have been have with this car. When riding in a 30 mile drive condition, the transmission jerks and boots. The service manager has driven and has seen it boot but, he claims it is the way the car is to run. The tires on this car roars so loud when you are riding down the road that you can not hear yourself think. The also has chips of tire missing from the tires. For a new car I have had so much trouble and the service department fail to work on it. All they do is drive the car so the mileage can bill up. Also, the brakes on this car rubs and I feel it is a safety hazard to all men. Kia is aware of all these problems. They just don't want to admit they have lemons. I have a 2015 Kia Optima LX which was purchased with 3 miles. I have replaced my windshield wipes and I can not get any help from the service manager or the maker. The tech from headquarters was to come out but all of a sudden he decides not to come. I have had so many problems and I am so unhappy with this car. It makes me wonder it I received a car that the mileage has been set back. It runs like a car that has been used. How does a new engine shakes and makes the dashboard shake? How can anyone get help from a service department that does not want to help. Kia has cost me a lot of unnecessary time at the service department and has cost my faith in Kia to be none at all. I purchased the vehicle from Victory Kia of Victoria TX and I will not referred anyone to this dealership. Victory is only concerned with selling not their customers. What am I to do with a car that is not doing what the papers and sales people said it would do.  It's been 2 yrs and 3 months that I have had this vehicle. The engine has noise as if the lifters are going bad. The service department  continues say they don't hear anything. I will never buy another Kia or will I refer anyone to buy a Kia. I am truly unhappy with this car. The service center in Victoria Tx needs to be observed. All they do is lie to their customers and beat people out of their money. You are not being represented well.