There are 21 owner-reported visibility & wipers complaints for the 2016 Kia Optimain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2016 Kia Optima. The contact stated that while driving approximately 45 MPH, there was loud banging sound coming from the vehicle and there were shards of glass on the right elbow of the contact. No warning light was illuminated. Upon further inspection, the contact stated that the sunroof glass panel had shattered outward. The local dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 24,500.
The contact owns a 2016 Kia Optima. The contact stated that while driving at an undisclosed speed, the vehicle failed to operate properly. No warning light was illuminated. The vehicle was taken to a local Good Year Service Center where it was diagnosed and determined that the battery, alternator, and drive belt needed to be replaced. The vehicle was repaired; however, several miles later the engine seized. The local dealer was contacted. The vehicle was not diagnosed or repaired. In addition, the contact stated that all four windows shattered, and the window regulators were replaced several times. The contact stated that the front driver’s and front passenger’s side windows had shattered, and moisture entered the cabin of the vehicle during inclement weather. Upon further investigation, the contact related the failure to an undisclosed NHTSA recall. The manufacturer was made aware of the failure. The failure mileage was approximately 48,889.
The contact owns a 2016 Kia Optima. The contact stated that both the driver’s side and passenger’s side windows opened independently without the driver or occupant input, and the windows failed to roll up while depressing the window switches. The dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 69,600.
All 4 of my windows regulators went out within a week without any warning the two front windows went down and I can’t get them back up the two back windows are up but I have something holding them up which is dangerous because I can’t put the child lock on for my children because I can’t let the windows in case I have to get them out
The contact owns a 2016 Kia Optima. The contact stated while driving at an undisclosed speed, the traction control, Forward Collision Avoidance: Automatic Emergency Braking, Lane Keep Assist, and auto high-beam warning lights were illuminated. The contact also stated that the four windows failed to function as needed. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 156,000.
My complaint is regarding the rear windshield, which came with the vehicle when I purchased it new in 2016 from a Kia dealership (Santa Fe Kia, Santa Fe, New Mexico). The Optima has never been in an accident. Over the last several years, the rear windshield has become increasingly blurry making it difficult to see traffic behind me. This situation is worse particularly at night. The blurriness is both from the outside looking in and inside looking out. I have called several Kia dealers and they claim that they are not aware of the problem, and have told me that the windshield is not warranted.
3 of the 4 windows have had failures in the window regulators and the windows do not work.
The contact owns a 2016 Kia Optima. The contact stated that while driving approximately 70 MPH, the sunroof fractured without impact. The vehicle was taken to the dealer who diagnosed that the sunroof needed to be replaced. The vehicle had not been repaired. The contact learned of a lawsuit regarding the failure. The manufacturer was not made aware of the failure. The approximate failure mileage was 70,000.
The contact owns a 2016 Kia Optima. The contact stated that the rear passenger’s side window failed to roll up as needed. The contact’s spouse pulled the window up manually. The contact stated that months later while driving approximately 65 MPH, the rear driver’s side window fell into the door. The contact’s spouse manually pulled the window up. The contact stated that several months later while driving approximately 75 MPH, the failure occurred with the driver’s side window. The contact took the vehicle to a certified mechanic and was informed that the window regulator failed and that the window panels needed to be replaced. The vehicle had not been repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 107,000.
Three of the 4 window regulators have unexpectedly failed leaving the window partially open. The passenger rear failed on 11/2022. The driver's side rear failed on 8/2022. The passenger front failed on 3/2023. On each occasion, the window failed where it was partially open. And none of the windows were in the process of being raised or lowered. The gears on each of the regulators had basically disintegrated. The window regulators are around $200 each for just the parts and they are not covered under the warranty. The new regulators come with a blue gear instead of the original white gear.
All 4 windows in my car has dropped down and won't go back up. Have to put a car cover over it to keep it from raining in it or to keep anything else out of it. I rarely rolled my windows down in this car every since I have purchased it and all of a sudden all the windows just drops down. This is a defect on the company part and not mine and i want to find out why I never received a recall letter to this effect for I have seen and read that there were cars recalled for the same problem that I am having with mine.
The contact's grandmother owns a 2016 Kia Optima. The contact stated that while driving at 25 MPH, the rear driver’s side window inadvertently fell. There were no warning lights illuminated. The contact veered to the side of the road and pulled up the window manually. She then inserted a piece of paper in the upper right corner of the window to keep it in place. The contact stated that the failure reoccurred while driving. The front and rear driver’s side windows and the rear passenger’s side window also inadvertently fell. The contact inserted pieces of paper in the upper right corner of each window. The vehicle was taken to the dealer but was not diagnosed. The dealer informed the contact that the vehicle would be repaired at her expense. The manufacturer was notified of the failure but did not provide any assistance. The vehicle was not repaired. The failure mileage was approximately 83,500.
Without heavy use (I don’t often have passengers in the back seat), driver side rear window regulator/motor failed in May, causing the rear window to fall into the door while driving. This is a major safety issue as anything can go through the car - rain or debris. It was roughly $600. This weekend, the same thing happened to another window out of the blue while having my dog in the back who nearly jumped out after it fell into the door. Now, the part is backordered and the Kia dealership has said it could be months before the window can be repaired and they offer no solution on how to keep the window up in the meantime. This is an expensive safety issue and should not be failing in multiple windows. My car only has 65k miles on it.
The contact owns a 2016 Kia Optima. The contact stated the passenger's side and rear driver's side window became inoperable. There was no warning light illuminated. The contact called the local dealer however, the vehicle was not diagnosed nor repaired. The contact removed the door panels and noticed that the power window regulator was corroded. The manufacturer was not informed of the failure. The failure mileage was 48,000.
The contact owns a 2016 Kia Optima. The contact stated that while driving at an undisclosed speed, the daytime running headlight would inadvertently blink on and off and turn off. The contact was unable to drive the vehicle at night due to the failure. Also, the rear driver’s and passenger’s side windows were inoperable. The vehicle was taken to the dealer, but the dealer could not replicate the headlight failure. The dealer replaced both rear windows. However, the failure recurred with the front driver’s and passenger’s side windows. The vehicle was not repaired. The manufacturer was made aware of the failure and informed the contact to take the vehicle to the dealer but provided no assistance. The failure mileage was approximately 90,000.
THE RIGHT REAR WINDOW SUDDENLY ROLLED DOWN WHILE DRIVING. CHECKS REVEAL THAT THE MOTOR THAT CONTROLS THE UPWARD/DOWNWARD MOVEMENT WAS INOPERABLE. I TOOK IT TO THE DEALER AND THEY CONFIRM THE MOTOR NEEDED CHANGING. I EXPLAINED TO THEM THAT I AM THE ONLY USER OF THE CAR AND THE BACK SEAT HAS NEVER BEEN USED, THEY STILL CHARGED $650 TO REPLACE THE MOTOR. SIX MONTHS LATER THE SAME THING HAPPENED TO THE REAR LEFT WINDOW. I AM NOT IN A POSITION TO PAY ANOTHER $650, SO I TRIED TO PLACE PAPER IN THE SPACE TO HOLD THE GLASS IN PLACE. NOW TODAY THE RIGHT FRONT GLASS JUST ROLLED DOWN WHILE DRIVING. I SPOKE WITH A KIA DRIVER I SAW IN THE PARKING LOT AT WALMART AND HE STATED THAT HE HAD SIMILAR PROBLEMS.
WHILE DRIVING ABOUT THIRTY MILES PER HOUR IN TRAFFIC I HEARD A BANG AND MY SUNROOF EXPLODED. THANKFULLY THE SUN SHADE WAS CLOSED OR SHARDS OF GLASS WOULD HAVE HIT ME. THE CAR BEHIND ME SWERVED PROBABLY TO AVOID THE GLASS. IT WAS SCARY AND I INITIALLY THOUGHT AN ACCIDENT HAD OCCURRED. THE MANUFACTURER NEEDS TO FIGURE OUT HOW THIS HAPPENED AND CHANGE THE DESIGN TO PREVENT IT.
All window regulators failed before 100K miles. This does not allow for windows to open in case of emergency, This problem has been personally confirmed by dealer and also in service bulletin SA418. This is a common problem in this car make/model/year. This component has been known to the manufacturer for defect. No warning lights, just instant lack of window use.
TL* THE CONTACT OWNS A 2016 KIA OPTIMA. WHILE DRIVING APPROXIMATELY 55 MPH, A LOUD EXPLOSION WAS HEARD. THE CONTACT STOPPED THE VEHICLE AND DISCOVERED THAT THE GLASS SUN ROOF HAD EXPLODED AND SHATTERED WITHOUT WARNING. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER AND LOCAL DEALER WERE NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 27,000. *BF *TR
TL* THE CONTACT OWNS A 2016 KIA OPTIMA. WHILE THE VEHICLE WAS PARKED OUTSIDE THE RESIDENCE, THE SUN ROOF EXPLODED. THE VEHICLE WAS DRIVEN TO CLASSIC KIA CARROLLTON (2920 N INTERSTATE 35E, CARROLLTON, TX 75007), BUT WAS NOT DIAGNOSED OR REPAIRED BECAUSE THE VEHICLE WAS OUT OF WARRANTY. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 80,500.
Showing 1–20 of 21 complaints
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026