Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2016 Kia Optima owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owned a 2016 KIA OPTIMA. The contact stated that while driving at 30 MPH occupied with her husband the contact heard a noise coming from the rear of the vehicle and smoke coming from the rear of the vehicle as you looked in the drive side rear view mirror and while depressing the brake pedal attempting to come to a complete at the traffic light, the brakes failed to work a intended. No warning light illuminated. The contact mention she kept trying to depress the brake pedal, however the vehicle kept accelerating causing the vehicle to crash into a ditch, go around a telephone poll, crashing into a rock garden which allowing the vehicle to come to a complete stop. The vehicle was towed to a towing lot call interstate towing then the vehicle was then towed by insurance company to a collision center. No injuries were sustained. No medical attention. …
5/9/23 appointment for 4 recalls -completed 2 and ask if we could bring back next day to finish and we said no because granddaughter in school so service manager said important to get it back in and finish and sent granddaughter home with car 5 days later while driving car caught on fire and lost brakes and transmission and swerved into vacant parking lot smoke and flames coming into car and girls had to jump while car was still moving both girls checked on sight for smoke inhalation. 15 year old had to go to emergency room for road rash and nerve issues. we have documents ,911 tapes, videos, text ,,,witnesses, pictures. very negligent on service dept. for sending car out without completing issues. we came ready to leave it but they sent it out.
The contact owns a 2016 Kia Optima. The contact stated while driving 35 MPH, the brake pedal was depressed; however, the vehicle failed to stop immediately. The contact depressed the brake pedal harder and the vehicle stopped. The vehicle was taken to the dealer the following day and the dealer was not able to identify a failure with the vehicle brakes although the transmission was adjusted. The contact stated that the failure continued. The vehicle was taken back to the dealer however, the mechanic was unable to duplicate the failure. There were no warning lights illuminated at the time of the failure. The dealer contacted the manufacturer, and a field inspector was sent to the dealer to inspect the vehicle. The failure mileage was 92000.
The contact owns a 2016 Kia Optima. The contact stated that after having a routine oil change and tire maintenance, the vehicle began making an abnormal clunking sound. The vehicle failed to start. The check engine warning light was illuminated. The message that the automatic brake was disabled was displayed. Additionally, several unknown warning lights were illuminated. The contact called an independent mechanic and was referred to the dealer. The contact called the local dealer, and the vehicle was towed to the local dealer, where an unknown diagnosis was made. The vehicle was not repaired. The dealer declined to repair the vehicle. The manufacturer was not contacted. The failure mileage was approximately 149,020.
The car caught on fire while I was driving. No warning lights came on and the car didn't show it was running hot. I tried to engage the brakes, and they malfunctioned. I coasted the car to the side of the highway, where the fire and smoke plumed from under the car. I immediately exited the car and ran. As I was running from the car the grass was on fire. The car was totally destroyed by fire. The car has not been inspected by my insurance or Kia. Kia has a class action settlement for car fires the year, make, and model of mine.
The contact owns a 2016 Kia Optima. The contact stated that while his daughter was driving at an undisclosed speed, the brake pedal was firm while depressed. The vehicle failed to stop immediately. The contact's daughter drove over a curve to stop the vehicle. The contact's daughter pulled into a parking lot and parked the vehicle. The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was 40,000.
When starting to move from traffic light, engine revved to full throttle, brakes would not stop the vehicle. I swerved right to avoid the vehicle in front of me, then went over a sidewalk and struck a tree. Car still would not stop. Finally came to rest in a ( luckily empty) bowling alley parking lot. Vehicle sustained heavy right side front damage and had to be towed from the scene.
My 2016 Kia Optima has been consuming oil every 1.5months. I have multiple times had to replace my oil because my oil light kept coming on. I've checked it every single time and it is barely anything there. I have my breaks mess up and not work as properly with my safety and others being comprised. I have brought this up to my Kia dealership but they have just brushed it off and charged me for an oil change. I have seen and heard many cases like mine and it has happened worse to them to the point where the car stops in the middle of the highway. My car has been checked by others and they have all noticed the same thing - the oil levels extremely low only after 1 and a half months or way prior to when my next oil change should be made. Having this happen is expensive and life threatening when the brakes don't work as they should or when my could possibly bust. …
The contact owns a 2016 Kia Optima. The contact stated that while driving in the rain at unknown speeds the brake pedal was depressed, however, the vehicle did not respond and began to hydroplane. The vehicle swerved left and right, when the vehicle in front moved to the side, the contact's vehicle continued to roll until the brakes responded. The vehicle came to a stop and no warning lights were illuminated. The vehicle was taken to the dealer where they did not diagnose or repair it. The vehicle was taken to an independent mechanic where it was stated that new tires may help and the tires were replaced. The failure recurred. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.
While driving at highway speeds on the freeway in San Diego, the engine of my 2016 Kia Optima catastrophically seized without warning. I instantly lost all power steering, brake assist, and electrical power, creating an immediate life-threatening emergency. The vehicle was towed to a Kia dealer. Corporate Techline and the dealership are refusing to perform the mandated settlement rod bearing test and are falsifying paperwork to deny the safety remedy.
Brake complaints in other Optima years
Frequently asked questions
How common are brake problems on the 2016 Kia Optima?
NHTSA has 24 complaints about the brakes of the 2016 Kia Optima, 3% of the model year's 759 complaints.
Is there a recall for 2016 Kia Optima brake problems?
No. NHTSA lists no brakes recall for the 2016 Kia Optima, though it has 5 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2016 Kia Optima brake problems start?
Half of the complaints with a recorded mileage happened before about 51,000 miles, and 33% before 25,000 miles.
Is it dangerous?
Owners linked 2 crashes, 2 fires and 1 injury to brakes problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.