Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2014 Kia Optima owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owned a 2014 Kia Optima. The contact stated that as he attempted to merge onto a highway at 45 MPH, the brake pedal and steering wheel locked up upon the depression of the brake pedal without warning. Due to the failure, the contact hit an electrical box encased in concrete as the vehicle continued to roll into bushes before it came to a halt. The airbags deployed upon impact. The contact exited the vehicle and removed his son from the back seat. The contact was not treated for injuries at the scene. The contact's son had a few lacerations on his neck that did not need medical attention. A police report was filed. A few days, his insurance towed the vehicle from the scene to an independent junkyard where the vehicle was deemed a total loss. …
The contact owned a 2014 Kia Optima Hybrid. The contact stated while parked and unoccupied, the vehicle caught fire. Smoke and flames were coming from the engine of the vehicle. No injuries were sustained. The fire department was notified and extinguished the fire. A fire department report was filed. The vehicle was towed to the contact's insurance company. The vehicle was not diagnosed or repaired. The vehicle was destroyed. The fire department was notified and extinguished the fire. A fire department report was filed. The vehicle was towed to the contact's insurance company. The vehicle was not diagnosed or repaired. The contact was relating the failure to NHTSA Campaign Number: 23V652000 (SERVICE BRAKES, HYDRAULIC) however the VIN was not included in the recall. …
The contact owns a 2014 Kia Optima. The contact stated while driving at 30 MPH, the check engine warning light illuminated and the vehicle stalled while driving. The contact manually pushed their vehicle to the side of the road and noticed smoke coming from the engine compartment. The contact opened the hood of the vehicle where more smoke was coming from the engine and fire coming from the passenger side of the engine. The contact ran to a nearby business to get a fire extinguisher to extinguish the fire. The contact was in process of the vehicle being towed to a local dealer. The contact concerned that NHTSA Campaign Number: 21V331000 ( service brakes, hydraulic) was related to the failure. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 80,000.
The contact owns a 2014 Kia Optima. The contact received notifications of NHTSA Campaign Numbers: 20V10000 (FUEL SYSTEM, GASOLINE) and 21V331000 (SERVICE BRAKES, HYDRAULIC). The contact stated that while driving at an undisclosed speed, there was an abnormal fuel odor coming from the engine and entering the cabin of the vehicle through the A/C vents. The check engine warning light and ABS warning light was illuminated. The contact stated that on a separate occasion, while driving at an undisclosed speed, the vehicle stalled. The contact became aware that the vehicle was out of fuel. The contact added five gallons of fuel, and the vehicle stalled several miles down the road. The vehicle had again run out of fuel. The contact noticed that fuel was leaking from the vehicle. The vehicle was towed to the dealer, but was not diagnosed or inspected. …
The contact works as an investigator for the Utah Motor Vehicle Enforcement Division. The contact was investigating a 2014 Kia Optima with a salvaged title and reported that the air bags failed to deploy in a front-end collision. The contact stated that the air bags may have been removed or the air bag sensors were disconnected. The contact stated that while the driver was driving at 30-35 MPH, the brake pedal was depressed but the brakes failed to stop the vehicle. The vehicle crashed into another vehicle. The air bags failed to deploy. No warning light was illuminated. The driver's face struck the steering wheel upon impact. The driver received medical attention. A police report was filed. The vehicle was towed to a tow yard, where the insurance company investigated the crash, but had not yet deemed the vehicle totaled. The manufacturer was not made aware of the failure. …
The contact owns a 2014 Kia Optima. The contact stated that the oil level was lower than expected. There was an unknown warning light illuminated. The vehicle vibrated while driving at various speeds. The vehicle was included in NHTSA Campaign Number: 17V224000 (Engine and Engine Cooling); and the engine was replaced under the recall in September 2020. The contact stated that 5 years after the recall repair was completed, after approximately one month, the brake failure warning light was illuminated. The vehicle was taken to a certified mechanic who added brake fluid to the brake reservoir, and the brake warning light illuminated approximately 2 weeks later and remained illuminated. The contact spoke with the dealer, who confirmed that the VIN was not included. The vehicle was not diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was 294,000.
The contact owned a 2014 Kia Optima. The contact stated that while the vehicle was parked in the garage, the vehicle had begun to burn. The fire department was called and the vehicle fire was controlled using water to extinguish the flames. The contact stated that the fire department filed a report. The contact stated that the vehicle was towed to an impound lot and had not been examined by a dealer or insurance adjuster. The manufacturer was informed of the failure. The contact was aware of one recall associated with the VIN, NHTSA Campaign Number: 21V331000 (Service Brakes, Hydraulic), however there were a total of three recalls - NHTSA Campaign Number: 18V907000 (Fuel System, Gasoline, Engine), and NHTSA Campaign Number: 20V100000 (Fuel System, Gasoline). The contact stated that she was not aware of the other two recalls. The failure mileage was unknown.
The contact owns a 2014 Kia Optima. The contact received notification of NHTSA Campaign Number: 20V100000 (Fuel System, Gasoline) and 21V331000 (Service Brakes, Hydraulic) however, the parts to do the recall repairs were unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repairs. The contact stated that the dealer stated that the vehicle would not receive the recall repair for NHTSA Campaign Number: 21V331000 (Service Brakes, Hydraulic) until parts for 20V100000 was available, and the repair was completed. The contact stated that the vehicle was leaking fuel and emitting a fuel odor within the cabin of the vehicle. There was no warning light illuminated. The approximate failure mileage was 103,748. The manufacturer was made aware of the failure. Parts distribution disconnect.
The contact owns a 2014 Kia Optima. The contact stated after the vehicle was started and warmed up, the engine made an abnormal loud knocking sound. The vehicle was towed to Chavez Automotive, where it was diagnosed and determined that the engine had failed and needed to be replaced. The vehicle was not repaired due to the cost. Additionally, the dealer was contacted for the recall repair of NHTSA Campaign Number: 23V652000 (Service Brakes, Hydraulic); however, the dealer informed the contact that the recall repair could not be performed due to the vehicle having a Salvage Title. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not notified of the failure. The failure mileage was approximately 65,000.
The contact owns a 2014 Kia Optima. The contact received notification of NHTSA Campaign Number: 21V331000 (Service Brakes, Hydraulic); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that there was a burning odor coming from the engine compartment. The contact stated that while driving 5 - 10 MPH, the vehicle suddenly stalled and lost all power. The contact was unable to restart the vehicle. The ABS, check engine, and battery warning lights were illuminated. The vehicle was towed to the dealer. The manufacturer was made aware of the issue. The failure mileage was 133,000. Parts distribution disconnect.
Related recalls
Service brakes, hydraulic › Antilock/traction control/electronic limited slip › Control unit/module
Kia America, Inc. (Kia) is recalling certain 2010-2019 Borrego, 2014-2016 Cadenza, 2010-2013 Forte, Forte Koup, Sportage, 2015-2018 K900, 2011-2015 Optima, 2011-2013 Optima Hybrid, Soul, 2012-2017 Rio, 2011-2014 Sorento, and 2010-2011 Rondo vehicles.
Remedy: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the HECU fuse, free of charge.
Service brakes, hydraulic › Antilock/traction control/electronic limited slip › Control unit/module
Kia Motors America (Kia) is recalling certain 2013-2015 Optima and 2014-2015 Sorento vehicles previously recalled under recall 20V-519. Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.
Remedy: Owners are advised to park outside and away from other vehicles and structures until the recall repair is completed. Dealers will install a new multi-fuse, and inspect the HECU for leaks, replacing the HECU if…
Service brakes, hydraulic › Antilock/traction control/electronic limited slip › Control unit/module
Kia Motors America (Kia) is recalling certain 2013-2015 Optima and 2014-2015 Sorento vehicles. Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.
Remedy: Kia will notify owners, and dealers will inspect the HECU for leaking brake fluid and replace the HECU if necessary, free of charge.
NHTSA investigations
Hyundai and Kia ABS Module Fires
The Office of Defects Investigation (ODI) has received eight Hyundai Motor America (Hyundai) and eight Kia America, Inc. (Kia) Part 573 Recall Reports between 2016 and 2023. The combined 16 safety recalls all involve the antilock braking system (ABS) modules or Hydraulic Electronic Control Units (HECU) manufactured by the equipment supplier Mando.
Brake complaints in other Optima years
Frequently asked questions
How common are brake problems on the 2014 Kia Optima?
NHTSA has 42 complaints about the brakes of the 2014 Kia Optima, 7% of the model year's 590 complaints.
Is there a recall for 2014 Kia Optima brake problems?
Yes — NHTSA recall 23V-652 (control unit/module, Sep 25, 2023); NHTSA recall 21V-331 (control unit/module, May 10, 2021); NHTSA recall 20V-519 (control unit/module, Aug 27, 2020). Recall repairs are free at authorized dealers.
At what mileage do 2014 Kia Optima brake problems start?
Half of the complaints with a recorded mileage happened before about 85,000 miles.
Is it dangerous?
Owners linked 8 crashes, 4 fires and 6 injuries 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.