2016 KIA Soul engine problems

ENGINE

I am filing a formal safety compliance complaint regarding my 2016 Kia Soul (1.6L GDI engine) and a structural failure of the exhaust/catalytic converter system related to NHTSA Campaign 19V120000 / Recall SC176. The vehicle has thrown a persistent P0420 Check Engine Code (Catalyst System Efficiency Below Threshold) and is experiencing unsafe driving conditions, including severe power loss and sudden engine stalling in active traffic. Authorized franchise Valley Kia of Modesto has refused to honor the safety recall framework. They have denied federal compliance by refusing to perform the mandated exhaust inspections, engine combustion tests, or hardware replacement under the open recall guidelines, falsely claiming prior software updates absolve them of replacing the failed physical hardware. Corporate Case #26299283 was opened on August 19, 2026, but the franchise continues to operate in complete non-compliance with federal motor vehicle safety standards, leaving an active fire and stalling hazard unresolved.

NHTSA complaint #11758898 — an unverified report by a vehicle owner.

ENGINE

My 2016 Kia Soul with the 1.6L GDI engine lost power. On 08/21/2026 at 107,547 miles I took it to Grand Kia, 1950 West 104th Avenue, Thornton, Colorado, repair order 137483, service advisor Patricia Palmas. The dealer performed a cylinder compression test and a leak-down test and documented on the repair order that the engine has scored cylinder walls, with cylinder number 3 identified as the affected cylinder. They also performed a rod bearing clearance test, which passed. They pulled down the exhaust to inspect the downstream catalytic converter and recorded that inspection as okay. They noted new spark plugs with no signs of fouling. Despite recording scored cylinder walls on their own repair order, the dealer told me the vehicle was fine and took no further action. No diagnostic trouble code was present. I was not given a written reason for the refusal, no technical assistance or Techline case was opened that I am aware of, and no engine inspection under any campaign was offered. I was charged nothing and sent away with a vehicle that has documented internal engine damage. This vehicle is within the population covered by Kia safety recall SC176 (NHTSA campaign 19V120), which covers all 2012-2016 model year Souls with the 1.6L GDI engine. That recall describes a failure mode in which the catalytic converter is damaged by overheating, substrate particles enter the engine combustion chamber, and continuous abnormal combustion results in damage to one or more of the engine's pistons, which can cause connecting rod breakage and puncture the engine block, allowing oil to contact hot exhaust surfaces. The stated remedy includes upgrading the ECU logic, replacing the catalytic converter if damaged, and replacing the engine depending on the extent of damage. Scored cylinder walls on a single cylinder is consistent with the damage mechanism that recall describes. The recall states there are no restrictions on owner eligibility. Nevertheless, no evaluation under SC176

NHTSA complaint #11758578 — an unverified report by a vehicle owner.

ENGINE

Engine block had been replaced due to recall and excessive oil consumption, but vehicle is doing this again. Local dealership refuses to give appt for oil check and is sending us 55 miles away. We’re told it will be about 1k to test it for fuel combustion and oil change before they can even test it. Replacement engine block failed to fix the issue and local Kia is not helpful.

NHTSA complaint #11756529 — an unverified report by a vehicle owner.

ENGINE

My 2016 Kia Soul is a 2.0L Gasoline Direct Injection engine. 1 prior recall for Kia Souls have occurred, which is seemingly identical to my issue. Recall SC176 addresses Kia Souls with the 1.6L engine, and it just so happens my issue is the same. Kia also issued a response to knock issues with the Soul 2.0L MPI engine, the KSDS Campaign, where Kia rolled out the Knock Sensor Detection System software update (Campaign SC200) to monitor for connecting rod bearing. I have the GDI so this was not available to me. The catalytic converter is damaged from piston corrosion. The engine hasn't been properly powering the car to allow it to accelerate, nearing stall from stop, and when trying to upshifting. Power loss combines with a regular whistling noise, and occasional knock noise. Kia has been having similar issues with their varying Soul models. They have attempted to limit the scope of what fixes they'll provide, but clearly the scope was not broad enough. The first symptom of this issue occurred several months ago, at which point I made an appointment asap with Kia, the soonest of which was almost 2 months later.

NHTSA complaint #11755019 — an unverified report by a vehicle owner.

ENGINE

Check engine light came on and car was out of oil even though an oil change was done about a month ago. Catalytic converter was replaced once already. Per mechanic excess heat caused out to leak catalytic converter needs replacing again and now engine is damaged as all engine oil leaks out where it cannot be detected on ground. Danger of fire according to recall sc176 and mechanic. Car was smoking so it has been parked for safety to avoid fire

NHTSA complaint #11751366 — an unverified report by a vehicle owner.

ENGINE

The contact owns a 2016 Kia Soul. The contact stated that while the vehicle was parked, it was started, and there was smoke coming from the engine compartment. The vehicle was turned off to stop the smoking. The check engine warning light was illuminated. The vehicle was towed to a dealer, where it was diagnosed, and it was determined that the engine needed to be replaced. The vehicle was not repaired. The contact researched and became aware of an unknown recall; however, the VIN was not under recall. The manufacturer was not notified of the failure. The failure mileage was approximately 140,000.

NHTSA complaint #11750671 — an unverified report by a vehicle owner.

ENGINE

What component or system failed or malfunctioned, and is it available for inspection upon request? The vehicle is a 2016 Kia Soul 1.6L GDI with approximately 83,000 miles. The vehicle experienced engine performance issues, loss of power, and stalling. A Kia dealership diagnosed a failed/melted catalytic converter and reported metal shavings in the engine oil. The vehicle has not been repaired and is available for inspection upon request. How was your safety or the safety of others put at risk? The vehicle stalls and loses power, creating a safety hazard while driving in traffic. A sudden loss of power increases the risk of being struck by another vehicle and makes it difficult to safely maintain speed, merge, or cross intersections. Because the vehicle is unreliable and may stall unexpectedly, I do not consider it safe to operate. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. The condition was confirmed by an authorized Kia dealership. The dealership diagnosed a clogged/melted catalytic converter and reported metal shavings in the engine oil. The dealership advised that the catalytic converter must be replaced before they would perform further engine diagnosis. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? The vehicle was inspected by an authorized Kia dealership. Kia Customer Care was notified of the issue and reviewed the claim but declined assistance. To my knowledge, the vehicle has not been inspected by a Kia field engineer, police agency, or insurance investigator. Were there any warning lamps, messages, or other symptoms prior to the failure, and when did they first appear? Yes. The vehicle experienced drivability issues, loss of power, and check engine light illumination. Diagnostic trouble codes reported included P0420, P2191, and P2196. The symptoms progressively worsened and eventually resulted in severe performance issues and stalling.

NHTSA complaint #11745932 — an unverified report by a vehicle owner.

ENGINE

hello nhtsa i have a problem with my car. which kia soul plus with 83000 miles on it. It have check engine light blinks with code p1326 which is knock sensor recall. i went to kia dealer at federico kia at wood river illinois they replaced the knock sensor. it show up back in 6 miles. i took it back to the dealer.they hold the car for one week. they said you got denied of engine replacement due to lack of maintenence. it have sevice records on carfax.

NHTSA complaint #11744258 — an unverified report by a vehicle owner.

ENGINE

My 2016 Kia Soul (1.6L GDI engine) experienced a catastrophic, sudden engine failure while driving, preceded by Check Engine Light code P0420 (Catalyst System Efficiency Below Threshold). This exact failure sequence is the precise subject of active NHTSA Safety Recall Campaign 19V120 (Kia Campaign SC176).Although the vehicle received the mandated SC176 preventative software update in 2019, the underlying mechanical defect was not cured. High exhaust gas temperatures caused the catalytic converter to degrade and fracture internally. The fractured abrasive substrate particles were then siphoned backward into the engine combustion chamber during normal valve operation. This caused immediate, severe scoring of the cylinder walls and piston damage, leading to total engine seizure and failure. This defect presents an extreme safety risk. Sudden engine failure at highway speeds causes an immediate loss of motive power, braking assistance, and power steering, significantly increasing the risk of a high-speed collision. Furthermore, fractured connecting rods or oil leakage stemming from this specific engine failure pose a severe vehicle fire hazard. The vehicle is currently held for diagnostic verification at Kia Riverside in California. I am filing this complaint because the manufacturer's 2019 software remedy was entirely ineffective at preventing the mechanical destruction of the engine and catalytic converter. I am requesting that the NHTSA hold Kia accountable to fulfill the physical repair and replacement mandates of Recall SC176 at zero cost to the consumer, regardless of the prior software logging.

NHTSA complaint #11742037 — an unverified report by a vehicle owner.

ENGINE

The vehicle is burning oil. It creates residue in my engine which may make it dangerous to drive and ruin the catalytic converter, among other issues. I was first notified of this problem during my second oil change in 01/2026 at a Kwik Kar Lube & Tune, about 6 months after purchasing the vehicle in 06/2025. As of 05/2026, an oil warning lamp began to appear on the vehicle dashboard to notify me that the oil was low. I checked the oil stick, and there was burnt oil, albeit very little of it. I had gotten a full synthetic oil change, so it was not yet time to change my oil, but clearly this issue is causing premature oil loss.

NHTSA complaint #11740483 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR

The contact owns a 2016 Kia Soul. The contact stated that while driving at various speeds the vehicle suddenly stalled. During the failure the odor of fuel was present. The failure had occurred on several occasions. The vehicle was towed to an independent mechanic who diagnosed that catalytic converter and damaged exhaust muffler. The vehicle was not repaired. The manufacturer and local dealer were not contacted. The contact indicated that the catalytic converter was previously replaced but the failure had reoccurred. The failure mileage was 120,786

NHTSA complaint #11739080 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

The contact owns a 2016 Kia Soul. The contact stated that while driving at an undisclosed speed, the engine oil warning light illuminated. The contact pulled over and inspected the vehicle. The contact discovered that there was no oil in the engine; however, the vehicle previously had an oil change. The contact added oil to the engine. The failure persisted. Additionally, the vehicle made rattling sounds and emitted a burning oil odor. The brake pedal had to be firmly depressed to stop the vehicle, the windows inadvertently rolled down, and the interior lights intermittently failed due to an electrical system failure. The vehicle was taken to the dealer, who determined that the timing cover needed to be resealed and the brake master cylinder, oil pan gasket, brake fluid, spark plugs, ABS, and window master switch needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 19V120000 (Engine, Engine And Engine Cooling); however, the VIN was not included in the recall. The manufacturer was made aware of the failure. The failure mileage was approximately 80,000.

NHTSA complaint #11738741 — an unverified report by a vehicle owner.

ENGINE

sudden reduced acceleration / limp mode while driving P1326 knock code potential engine failure / loss of power

NHTSA complaint #11736722 — an unverified report by a vehicle owner.

ENGINE

The contact owns a 2016 Kia Soul. The contact stated that an abnormal, knocking sound would emit upon depression of the accelerator pedal as a check engine light appeared on the instrument panel. The vehicle was initially taken to an independent mechanic where the diagnosed the vehicle with a defective rod knock sensor; he was then advised to no longer operate the vehicle. The vehicle was later towed to a dealer where they discovered that engine rod#4 had become defective which led to engine failure. Upon investigation, the contact discovered NHTSA Campaign Number: 19V120000 (Engine, Engine and Engine Cooling) which he linked to his failure. The manufacturer was then notified of the failure and the contact was informed that the vehicle was already serviced for the recall prior to him owning the vehicle. The vehicle was not repaired and remained in his possession. The failure mileage was approximately 90,000.

NHTSA complaint #11736323 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

The contact owns a 2016 Kia Soul. The contact stated that an abnormal, knocking sound would emit upon depression of the accelerator pedal as a check engine light appeared on the instrument panel. The vehicle was initially taken to an independent mechanic where the diagnosed the vehicle with a defective rod knock sensor; he was then advised to no longer operate the vehicle. The vehicle was later towed to a dealer where they discovered that engine rod#4 had become defective which led to engine failure. Upon investigation, the contact discovered NHTSA Campaign Number: 19V120000 (Engine, Engine and Engine Cooling) which he linked to his failure. The manufacturer was then notified of the failure and the contact was informed that the vehicle was already serviced for the recall prior to him owning the vehicle. The vehicle was not repaired and remained in his possession. The failure mileage was approximately 90,000.

NHTSA complaint #11736323 — an unverified report by a vehicle owner.

ENGINE

I am reporting a safety concern related to NHTSA Recall 19V120 involving my Kia Soul. The recall identifies a defect related to catalytic converter overheating, which can lead to engine damage, stalling, and increased risk of fire. My vehicle is currently experiencing an illuminated check engine light and unsafe driving conditions. During service evaluation at Kia of Columbus, I was informed that my vehicle has a catalytic converter blockage contributing to these issues. However, I was also told that my vehicle does not qualify for recall repair because no engine code was detected during diagnostics. This is concerning, as the vehicle is actively exhibiting symptoms consistent with the recall condition, including a confirmed catalytic converter issue and an illuminated malfunction indicator lamp. Despite this, I was denied full recall coverage and instead offered a goodwill repair requiring me to pay 50% of the cost. I believe this situation represents a failure to properly apply recall criteria and raises concerns regarding customer safety, as the vehicle may be at risk for engine failure or fire. I am requesting further review of this matter and investigation into the handling of this recall by the servicing dealership.

NHTSA complaint #11733837 — an unverified report by a vehicle owner.

ENGINE

The contact owns a 2016 Kia Soul. The contact stated that while driving at 55 MPH, the check engine warning light illuminated, and the vehicle stalled. Upon further research, the contact associated the failure with NHTSA Campaign Number: 19V120000 (Engine, Engine and Engine Cooling). The vehicle was taken to an independent mechanic who determined that the catalytic converter needed to be replaced. The mechanic informed the contact that the inside of the catalytic converter had melted, but there was no fire. The vehicle was repaired, but the failure reoccurred. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 105,000.

NHTSA complaint #11733058 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

The contact owns a 2016 Kia Soul. The contact stated that while driving at 55 MPH, the check engine warning light illuminated, and the vehicle stalled. Upon further research, the contact associated the failure with NHTSA Campaign Number: 19V120000 (Engine, Engine and Engine Cooling). The vehicle was taken to an independent mechanic who determined that the catalytic converter needed to be replaced. The mechanic informed the contact that the inside of the catalytic converter had melted, but there was no fire. The vehicle was repaired, but the failure reoccurred. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 105,000.

NHTSA complaint #11733058 — an unverified report by a vehicle owner.

ENGINE

I just bought the car one month ago, and While driving my 2016 Kia Soul on a high-speed highway at approximately 98,000 miles, the vehicle suddenly lost power without warning. The engine stopped responding and the car could not accelerate. This created a very dangerous situation because traffic was moving at high speed and I was at risk of being hit from behind. I was driving with my son, who has a disability, and I was taking him to his therapy appointment. The sudden loss of power made the situation even more stressful and unsafe because I was responsible for his safety while the vehicle was failing in traffic. Fortunately, I was able to carefully move out of the main highway and exit the road to avoid a crash. I managed to reach a nearby auto mechanic shop, where the vehicle had to remain because the engine had failed and the car could no longer be driven safely. This incident represents a serious safety concern because the vehicle lost power suddenly while driving on a fast highway, which could easily have resulted in a serious accident.

NHTSA complaint #11731997 — an unverified report by a vehicle owner.

ENGINE

I kept all of the maintenance records for the oil changes. The engine blew a piston and I will need a new engine. Driving down the road, it just lost power and died. Local mechanic looked at it and said I needed a new engine. When I began looking for a new engine, the cost would have been $3500.00 plus labor. When looking for a used engine, the salvage person said there was a recall on the engines. I took it to the local dealer, said I was over the mileage. and would probably cost the dealer $9000.00. The car is almost 10 years old. It was a good car. It was a standard, which should mad it last longer.

NHTSA complaint #11728553 — an unverified report by a vehicle owner.

ENGINE

Safety defect P1326 code is a known indicator of rod bearing wear. When it triggered, the vehicle immediately went into Limp Mode, creating a significant safety hazard. The behavior aligns with the documented defect affecting NU GDI Engines and is not consistent with normal Engine wear. I have confirmed the KSDS software update was performed. I have taken the vehicle to Clay Cooley Kia of Plano and my service advisor has confirmed that the engine is defected per the NU GDI Engine Settlement and related federal safety actions.

NHTSA complaint #11724827 — an unverified report by a vehicle owner.

ENGINE AND ENGINE COOLING

The contact owns a 2016 Kia Soul. The contact stated that while driving at an undisclosed speed, the vehicle shut off while driving on a ramp, and the vehicle coasted to the side of the road. The vehicle lost automotive power and stalled in a high-traffic area, creating a safety risk. The vehicle was towed to an independent mechanic, where it was diagnosed, and the vehicle was associated with NHTSA Campaign Number: 19V120000 (Engine, Engine and Engine Cooling). The dealer was not notified of the failure. The vehicle was repaired but the vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 120,000.

NHTSA complaint #11722032 — an unverified report by a vehicle owner.

ENGINE

The contact owns a 2016 Kia Soul. The contact stated that while driving at an undisclosed speed, the vehicle shut off while driving on a ramp, and the vehicle coasted to the side of the road. The vehicle lost automotive power and stalled in a high-traffic area, creating a safety risk. The vehicle was towed to an independent mechanic, where it was diagnosed, and the vehicle was associated with NHTSA Campaign Number: 19V120000 (Engine, Engine and Engine Cooling). The dealer was not notified of the failure. The vehicle was repaired but the vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 120,000.

NHTSA complaint #11722032 — an unverified report by a vehicle owner.

ENGINE

SUBJECT: Engine → Stall → Loss of power while driving: While driving normally, the vehicle began losing power and could not accelerate properly. The engine warning light illuminated and the vehicle repeatedly entered a reduced-power condition where it could barely maintain speed. The vehicle would stall while driving and then restart after sitting. This occurred multiple times over a period of time and progressively worsened. The engine also began consuming large amounts of oil between oil changes. Eventually the engine suffered catastrophic failure and would no longer run. A dealership later stated internal engine damage was present, including a failed valve and spark plug damage. The vehicle is currently at a dealership and available for inspection. The loss of power and stalling created a safety hazard because the vehicle could not maintain normal traffic speed and could have been struck by other vehicles. The problem was confirmed by a dealership service department. Warning lights were present prior to final failure and appeared during the loss of power events.

NHTSA complaint #11718401 — an unverified report by a vehicle owner.

ENGINE

I have put my 3rd Catalytic Convertor on this car. It looses power going uphill. Which is not safe. Just had 3rd on replaced yesterday Feb. 9, 2026. The mechanic said there is too much oil going to the engine. Mechanic said next thing would be replacing the engine. Why does my 2016 not have a recall on the engine.

NHTSA complaint #11716953 — an unverified report by a vehicle owner.