Kia Cadenza Complaints

218 consumer complaints on file.

#11771018October 14, 2026
ENGINE
COMPONENT: Engine oil pressure sending unit/switch (part 94751-3C000, per Kia repair shop) or the oil pressure system on my 2017 Kia Cadenza 3.3L V6, about 95,500 miles. The car and any removed part are available for inspection on request. SYMPTOM/WARNING: The oil pressure warning light first appeared in October 2026 and comes on intermittently when the engine is warm and the car is stopped or idling, then goes off once moving. It is becoming more frequent. No other lamps, messages, noises, or leaks. The engine runs quietly, confirmed by Kia repair shop. No crash, fire, or injury. SAFETY RISK: I cannot tell whether the sensor is faulty or oil pressure is truly low. If pressure is low, the engine could be damaged or fail while driving in traffic. If the sensor is faulty, the light is unreliable. CONFIRMATION: Dipstick level has been normal. Oil was changed 06/13/2026 and 10/06/2026; the light lessened, then returned. A Kia dealer inspected the car and recommended replacing the sending unit, quoted at $3,060.72 since the intake manifold must be removed. The dealer has NOT measured oil pressure and says it can only do so during that repair. An independent shop has not measured it either. MANUFACTURER: Kia declined warranty coverage through the dealer, saying the part is not covered. Kia's warranty extension TSB ENG237/WTY026 covers oil pressure switch problems on 2014-2016 Cadenzas built through 01/07/2016 (part 94750-37100). My car uses 94751-3C000 and was built later. I do not know if the new part is a revision or if the same failure occurs in later 3.3L models. I ask NHTSA to review this in 2017+ Kia 3.3L vehicles.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11770340October 10, 2026
UNKNOWN OR OTHER
I brought the car used and i checked for recalls. The dealer said that the recall for the windshield had been taken care of. I tried to get the dealership to address the issue to no avail. The windshield is still partial unattached and the car has leaks everytime it rains and when i touched the glass it was moving.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11755228August 6, 2026
STEERING, ENGINE, SERVICE BRAKES, HYDRAULIC
The contact owns a 2017 Kia Cadenza. The contact stated that while driving at various speeds, the vehicle suddenly lost motive power. The contact waited before restarting the vehicle and continued driving. The ABS warning light was intermittently flashing. The failure became more persistent, causing the vehicle to lose power steering functionality. The power steering and traction control warning lights were illuminated. The vehicle was taken to the dealer to be diagnosed, and it was determined that the Motor Driven Power Steering (MDPS) and Electronic Control Unit or Engine Control Unit (ECU) had failed. The parts to replace were Part Number: 56340/F60, a genuine OEM Motor Driven Power Steering (MDPS) Control Module. The vehicle was not repaired. The vehicle was not repaired. The contact stated that the vehicle was previously included in Manufacturer Recall Number: WTY039. The manufacturer was made aware of the issue, and a case was opened. The failure mileage was approximately 165,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11755245August 6, 2026
ENGINE
While operating the vehicle, the engine suffered a catastrophic internal mechanical failure, resulting in an immediate and dangerous loss of motive power on the road. A subsequent physical diagnostic scan at an authorized Kia dealership revealed manufacturer trouble code P008800 (Fuel Rail System Pressure-Too High) along with universal engine misfire codes P030100, P030200, P030300, P030400, P030500, P030600. The dealership confirmed that the internal engine failure includes a shattered piston. Code P008800 is the primary mechanical failure indicator for active manufacturer warranty campaign WTY 0034 (High Pressure Fuel Pump Failure). The defective high pressure fuel pump suffered a primary mechanical failure, spiking fuel rail pressures to dangerous limits, causing all six cylinders to misfire, and inducing low speed pre-ignition (LSPI). This extreme combustion anomaly directly fractured the engine's internal piston. The dealership is currently attempting to clear these diagnostic trouble codes and perform an oil change, which would actively destroy the physical and electronic evidence linking the safety recalled component failure directly to the engine's catastrophic destruction. This component failure poses a severe stall hazard and a risk of total engine failure while operating at highway speeds. Photographic proof of the official dealer diagnostic report has been preserved.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11748173July 3, 2026
UNKNOWN OR OTHER, ENGINE
my car caught on fire while driving, i was never notified of the recall
Crash:
No
Fire:
Yes
Injuries:
0
Deaths:
0
#11747784July 1, 2026
AIR BAGS
The airbag light randomly came on 2 weeks ago and stayed on , indicating that the airbags would not deploy in the event of an accident. I called my mechanic, who confirmed it was not a warranty item. My car only has about 45,000 miles on it and is well maintained. it has never been in an accident. I dropped my car off with my mechanic, who is waiting on the needed part, but noticed after I dropped it off that other Kia models have been subject to a recall for this same issue. My guess is that not a lot of people purchased Kia Cadenzas, so maybe this flew under the radar. I am looking at a repair bill in excess of $2,000 because of the cost of the part and the time it takes to access and diagnose the problem. Kia must be aware of this.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11744719June 17, 2026
UNKNOWN OR OTHER
I picked up my Cadenza from the repair shop. They were repairing the sunroof controls because the sunroof was not operating properly. I was 24 miles away from the shop headed home from Temple, TX to Waxahachie, TX on [XXX]. It sounded like a shotgun was fired right above my head and scared me. I am surprised I didn't crash. I pulled over and the sunroof had a 2 foot hole in it. The shade was in the shut position so no glass made into the cab. No rock or any debris hit the vehicle. My mom was driving behind me and she said she saw a huge chunk of glass fly up from my car and hit her car. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11742797June 8, 2026
ENGINE, TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS
The contact owns a 2019 Kia Cadenza. The contact stated that while driving at an undisclosed speed, several unknown warning lights illuminated. Additionally, upon starting the vehicle later, the contact noticed that there was an abnormal ticking sound coming from under the hood. The vehicle was taken to AutoZone, where the contact was informed that the diagnostic trouble code was associated with a tire sensor failure. The vehicle was not repaired. The dealer was not made aware of the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 74,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11732978April 22, 2026
ENGINE
Engine oil light is on and there is a burning smell when I drive. Fear of a fire breaking out in the engine when driving or parked. Had it looked at by a technician and they expressed those concerns to me and that brings me great worry. The service technician believed it was just the oil cap being loose but there was no evidence of that.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727779March 29, 2026
ELECTRICAL SYSTEM
The vehicle harness is burned and under recall sc206 for HECU fuses that was allegedly repaired which should have required a check of the harness connections . part number 91223f6632 is for the wire harness during engine replacement for campaign wty039 I was told the harness was melted and needed replacing , dealer put the car back together and told me we had to wrap up the work and return rental and get my car knowing it is a fire hazard I was in contact with warranty company for escalation who would not cover the recall part according to the dealer , I am still in escalations with Kia I have been left with no vehicle .engine repair was completed via dealer ,but they have reinstalled the broken harness and told me the car is ready for pick up. I am a disabled woman with small children and do not want to burn up in a fire was advised to report to dmv and nhtsa
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726927March 25, 2026
ELECTRICAL SYSTEM
Vehicle: 2015 Kia Cadenza Issue: Open HECU Safety Recall — Fire Risk I am the owner of a 2015 Kia Cadenza with an open HECU recall related to a known fire risk. I have been experiencing a burning smell inside the cabin of the vehicle, consistent with the recall defect. Upon contacting Kia Consumer Assistance, I was advised not to drive the vehicle due to the fire risk and to have it towed to a dealer. However, after calling multiple Kia dealers in the Pittsburgh, PA area, the earliest available appointment is over one week away. Kia Consumer Assistance called dealers on my behalf and was unable to secure an earlier appointment. They said they could "Look into a potential reimbursement of $55/day for a rental vehicle." but could not confirm a loaner. I am concerned that Kia is not treating this recall with the urgency a fire risk warrants. I WAS NOT PROACTIVELY CONTACTED ABOUT THIS RECALL DESPITE MY VIN BEING AFFECTED. I am now without transportation, my vehicle cannot be safely driven or stored in an enclosed space, and I am waiting over a week for a repair on a vehicle that could combust. I am requesting NHTSA review whether Kia is adequately addressing this recall with appropriate urgency and dealer capacity.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725993March 21, 2026
ENGINE
I currently have a complaint 11709255 regarding the electric thermostat. I just had that part replaced in November of 2025 for the 3rd time. Last week, again I had a warning of engine problem. The next day there was cold air blowing when the heat was on. The dash thermostat immediately began to move to hot. I was thankfully close to home. I turned car off and fan continues to run under the hood. I cannot afford to keep having this part replaced. Please look into this. This is not right.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11723674March 11, 2026
ENGINE
Check engine was flashing in front of my house in Brookhaven Pa. Took to mechanic around the corner, diagnosed with a blown head gasket & oil in my anti freeze over flow. Internal engine failure. Had towed to Kia dealership in NJ
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11716465February 7, 2026
ENGINE, FUEL/PROPULSION SYSTEM
I have and am the original owner of a Kia Cadenza 2017 with the 3.3L Lambda engine (same engine as the Sorento lawsuit). The vehicle is currently at the dealership getting repaired due to carbon buildup causing the fuel injectors to malfunction( despite of consistently being on top of maintenance and oil changes).I have read online of lots of users with failed engines due to carbon buildup in these engines. The warning lights I got were p0171,p0174, and p0191, and am worried that after the repair the engine will eventually fail due to the buildup as the main issue isn’t properly being addressed. The issue occurred about 300 miles ago where the dealership erased it. Then told the vehicle did not have any issues. Brought it back to the Kia dealership where they finally gave a proper diagnosis after being told nothing was wrong with car. I am concerned as there are lots of owners online experiencing the same issues with their Kia cadenzas and nothing done about it. Took the vehicle in after it stalled in traffic, but, as seen, the repair cost is high and a temporary band aid.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714783February 1, 2026
ELECTRICAL SYSTEM, EXTERIOR LIGHTING, VISIBILITY/WIPER
My entire Dash went Black. I could not see speed, gas level, milage. This is an extreme Hazard! I brought the car into "Crown KIA" in Clearwater to run a Diagnostic Check for 0.5 hour at $150 and they could not find the problem. I had no money to pay for additional time! I did research on this and found that this is a common problem with KIA's no matter what year!! Just because my particular VIN # is not on the recall should not absolve KIA from their duty to provide a safe reliable car!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11709255January 6, 2026
ENGINE, UNKNOWN OR OTHER
This vehicle was inherited to me in 2019 from my father who puchased it cash on 10/13/2017. On 4/19/2018 he brought it in for a check engine light which was related to recall sa299 (ELECTRONIC THERMOSTAT). On 7/11/2018 service was performed again. On 3/4/2022 I brought in for check engine light with same recall for ELECTRONIC THERMOSTAT. On 11/10/2025 car showed engine overheating. In fear, I immediately brought to closest mechanic stating same problem, ELECTRONIC THERMOSTAT AND RADIATOR HOSE WHICH GOES HAND IN HAND. Before work began I left voice mails and emails with the service manager of Rohrman Kia in Schaumburg, Il. No one reached out. I spoke with Jim at same location on 11/10/2025 at 4:00 pm who told me it was my responsibility because the part was no longer under warranty. I filed a complaint (24149522) with BBB. on 11/13/2025 after I had to pay my mechanic $1000 to fix problem which obviously is a defect. On 12/3/2025 I spoke with Mike from Kia who said part was no longer under warranty and will not reimburse. I asked him to prove the previous thermostat was installed correctly according to the service action sa 346 and he said they have certified techs and they do not have to prove that to me. I would like Kia to accept responsibility for this part. Also carfax does not show all times Kia replaced that thermostat.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11702878December 3, 2025
ENGINE
My 2016 Kia Cadenza (VIN [XXX] ) experienced repeated overheating, coolant loss, and eventually white exhaust smoke consistent with internal coolant intrusion. The issue began mid-2025 and worsened over time. Despite reporting overheating and coolant loss to Central Kia of Plano, the dealership failed to diagnose the problem, did not escalate to Techline, and did not check or apply Kia Service Action WTY039, which was active. They returned the vehicle to me still overheating, forcing me into multiple out-of-pocket repairs for coolant, radiator, radiator fan, and water pump replacement. None resolved the issue, and the vehicle became unsafe to drive due to rising temperature and smoke. A second dealer, Mesquite Kia, performed a proper diagnosis. Kia Corporate approved an engine replacement under WTY039 on 11/6/25, and the repair was completed on 11/29/25, confirming the overheating was caused by a covered engine defect. Kia Corporate later denied reimbursement for prior repair attempts by blaming “3rd party repairs,” ignoring that the dealership’s misdiagnosis forced me to seek outside help. This defect created safety hazards including overheating while driving, risk of stalling, coolant intrusion, and visible smoke. I am requesting NHTSA review Kia’s handling of this defect and the failure of Central Kia of Plano to diagnose or escalate a known engine issue, which allowed a safety defect to worsen. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11700022November 18, 2025
ENGINE
Complete engine failure due to rods and bearings (same as all other Kia engine recalls currently active). Ironically my car wasn’t included in the recall. Also I’ve noticed that Hyundai has extended the warranty for this same engine in the 2018 Santa Fe basically acknowledging it has a problem but didn’t include the 2018 Kia cadenza which has the EXACT SAME ENGINE. Now I have engine failure prematurely and they are trying to deny repairs. Also was never notified of the KSDS “upgrade” before engine failed only after and it had been to a Kia dealer for fuel pipe repair just recently in which they could have installed it before engine failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11699682November 16, 2025
ENGINE
No prior issues/light on dashboard as the car was just serviced for coolant hose replacement. On my way home from work, the car stalled and loss power at the light. The signs were giving engine failure due to losing power then a clicking/ticking noise. After pulling over and giving the car a break I tried to restart it, at that point the noise had change from the clicking to a weird knocking noise. I had the car towed to my trusted mechanic shop. He advised me that the engine indeed did fail and that it would need to be replaced. Verbatim he said: “The diagnosis is that the noise is an internal engine failure, rod bearing and connecting rods.” This was a major safety concern because the engine could have caught fire during that short drive I had home risking my life and surrounding vehicles. Aware of the Kia engine recalls already, I called Kia just for them to tell me it’s not on their recall list so it’s going to be an out of pocket repair. I asked if there was a way for it to be included in the engine recall as an exception due to low mileage (technically early engine failure) and the customer service rep was rude and condescending about how it’s not Kia’s problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11693699October 15, 2025
VISIBILITY:WINDSHIELD
The contact owns a 2014 Kia Cadenza. The contact stated that while driving through a car wash, there was water entering the vehicle through the front windshield. The vehicle was taken to the dealer, who diagnosed a failure with the windshield bonding agent. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 22V158000 (Visibility); the VIN was included, but the vehicle was previously repaired in 2022. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 129,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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