I bought my 2019 optima brand new back in november. it is now june and i have had it back to the dealership 3 times for randomly not starting on me. i get the same answer every time. they don't know what it is, nothing comes up on the computer when they plug it in. they say, "if it happens again, call us and well take it in". buying this car brand new and my payments being that of a range rover, i am extremely upset. to top it off, the back windshield is slipping down. i am over this car and i will never buy another kia again. but, my fight is not over, something will have to be done. it also hesitates at times, feels as though it is struggling to go. also, two times while i was driving the car, the dash lit up with almost everything like, i was in a crash, the exclamation point, etc.