Home · 2016 Kia Optima · Complaints

What 748 owners told NHTSA about the 2016 Kia Optima

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (748)Crash / fire / injury (46)Engine (421)Electrical system (99)Transmission & drivetrain (71)Fuel system (61)Lights (46)Body & structure (40)Visibility & wipers (36)Speed control (29)Engine & cooling (24)Steering (24)

36 of 748 complaints match · Visibility & wipers · clear filters · page 2 of 2

Oct 15, 2021Visibility & wipers

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.

NHTSA ODI 11436932

Sep 20, 2021Visibility & wipers

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.

NHTSA ODI 11433589

Jul 21, 2021Visibility & wipers

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.

NHTSA ODI 11425804

Feb 19, 2021Visibility & wipers

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.

NHTSA ODI 11396979

Jan 9, 2021Visibility & wipers

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.

NHTSA ODI 11387342

Aug 28, 2020Electrical systemVisibility & wipers

TL* THE CONTACT OWNS A 2016 KIA OPTIMA. THE CONTACT STATED WHILE DRIVING 60 MPH, THE DRIVER'S AND PASSENGER'S SIDE REAR WINDOWS STARTED TO ROLL DOWN INDEPENDENTLY. THE CONTACT WAS UNABLE TO ROLL THE WINDOWS BACK UP. THE VEHICLE WAS TAKEN TO LOCAL DEALER RICK CASE KIA LOCATED 14500 W. SUNRISE BLVD, SUNRISE, FL 33323, (954) 715-7580, WHERE IT WAS DIAGNOSED WITH NEEDING THE WINDOW REGULATORS TO BE REPLACED. THE VEHICLE HAD BEEN REPAIRED BUT CONTINUED TO EXPERIENCE THE FAILURE. THE MANUFACTURER HAD NOT BEEN INFORMED OF FAILURE. THE FAILURE MILEAGE WAS 37,222.

NHTSA ODI 11351833

Dec 9, 2019Electrical systemVisibility & wipers

TL* THE CONTACT OWNS A 2016 KIA OPTIMA. THE CONTACT STATED THAT ALL FOUR WINDOW REGULATORS FAILED. THE CONTACT WAS UNABLE TO GET THE WINDOWS TO MOVE UPWARD AND CLOSE. THE CONTACT TOOK THE VEHICLE TO KIA DELRAY (LOCATED AT 2255 S FEDERAL HWY, DELRAY BEACH, FL 33483, 561-637-5500) WHO STATED THAT THE WINDOW REGULATORS FAILED FOR ALL FOUR WINDOWS AND NEEDED TO BE REPLACED. THE VEHICLE HAD NOT BEEN REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND PROVIDED AUTHORIZATION TO REPAIR THE REAR WINDOWS. THE MANUFACTURER WAS CONTACTED AND PROVIDED CASE NUMBER: 13306734. THE APPROXIMATE FAILURE MILEAGE WAS 72,000.

NHTSA ODI 11287902

Jun 14, 2019Visibility & wipers

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

NHTSA ODI 11220163

May 22, 2019Visibility & wipers

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.

NHTSA ODI 11209258

Feb 5, 2018Transmission & drivetrainVisibility & wipersSpeed control

WHEN THE CAR ENCOUNTERS A HILL AND NEEDS TO DOWNSHIFT, EITHER TO CLIMB OR TO HOLD BACK THE SPEED WHEN IT DESCENDS, THE CRUISE CONTROL REMEMBERS THE DOWNSHIFT AND WILL NOT RETURN TO HIGH GEAR UNTIL A) IT IS MANUALLY OVERRIDDEN, BUT WILL STILL DOWNSHIFT UP TO 2 GEARS, WHEN THE LEVER IS PLACED BACK TO AUTOMATIC OR, B) WHEN THE CRUISE CONTROL IS TURNED OFF. THE CRUISE CONTROL ALSO BELATEDLY REACTS TO LOSS OF SPEED CONTROL AND OVERCORRECTS WITH TOO MUCH POWER, RESULTING IN A CRUDE RIDE, AS WELL. THE WORKLOAD IS INCREASED DEALING WITH GETTING THE CAR TO ATTAIN TOP GEAR ON FLAT ROADS, AND IS CREATING UNSAFE CONDITIONS, IN MY OPINION. I HAVE ATTEMPTED TO GET THIS ATTENDED TO AT THE DEALERSHIP, AND THEY CONTINUE TO NOT FIX THE ISSUE, AS WELL AS INFORM ME I SHOULDN'T BE USING CRUISE CONTROL ON HILLS. MY 2014 KIA OPTIMA DID NOT EXHIBIT THESE ISSUES, NOR ANY OTHER OF MY CARS WHICH HAD CRUISE CONTROL. THERE IS A PROBLEM AND THESE PEOPLE WILL NOT FIX IT. THE CONSUMER STATED THE HEAT DOES ENTER THE FOOT WELL AREA. *JS

NHTSA ODI 11067114

Mar 14, 2017Visibility & wipers

TL* THE CONTACT OWNS A 2016 KIA OPTIMA. WHILE DRIVING APPROXIMATELY 40 MPH, THE CONTACT HEARD AN EXPLOSION. THE CONTACT PULLED INTO A PARKING LOT AND NOTICED THAT THE ENTIRE SUN ROOF HAD SHATTERED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 5,039.

NHTSA ODI 10965957

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Working with the data? Download all 748 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2016 Kia Optima verdict →