2015 Kia Sorento Engine Problems

Was driving vehicle and it began to run hot, check engine light came on then started to make a knocking sound when getting to 30-35 mph. Was inspected by a service center. There it was confirmed an issue with the motor/head gasket

The contact owns a 2015 Kia Sorento. The contact stated that while driving approximately 40-45 MPH, the vehicle stalled. There was no warning light illuminated. The vehicle was pulled over to the side of the road. The contact attempted to restart the vehicle, but the engine made abnormal knocking sounds. The vehicle was towed to the residence and failed to restart. A mobile technician diagnosed the vehicle with engine failure. The vehicle was not repaired. The dealer and the manufacturer were not contacted. The failure mileage was 98,954.

The contact owns a 2015 Kia Sorento. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated and remained illuminated. There was a knocking sound coming from the engine. The vehicle was towed the local dealer and was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. No further information was available. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 128,405.

Dealer driving car 35mph. Check engine light started flashing. Burning plastic smell from under hood. Car cut off. Did not restart. Towed to mechanic, was told engine locked up.

I am filing this complaint regarding a suspected safety defect involving the Theta II engine in my 2015 Kia Sorento. The vehicle developed progressive engine failure symptoms including: Engine knocking and abnormal mechanical noise Loss of power while driving Misfire conditions Excessive oil consumption Progressive deterioration of engine performance These symptoms began at approximately 150,000 miles and worsened over time. Given the documented history of Theta II engine failures involving rod bearing defects, sudden engine seizure, loss of power, and fire risk, I believe my vehicle is experiencing a progression of the same known defect. 2) Safety Risk to Driver and Public The engine condition created serious safety risks, including: Potential sudden engine failure while driving Loss of power in traffic or at highway speeds Increased risk of collision Potential fire hazard associated with Theta II engine failures Despite these risks, Kia and its authorized dealership advised me to continue operating the vehicle. I was explicitly told to “drive it until it fails.” This guidance was given despite Kia’s documented knowledge of Theta II engine defects and associated safety hazards. 3) Manufacturer Response and Denial I reported the engine failure to Kia and its authorized dealership. Kia denied coverage, stating: The vehicle had “too many miles,” and The failure was allegedly “not rod bearing related.” However, Kia and the dealership refused to provide: Complete diagnostic trouble codes (DTCs) Technician notes or inspection reports Compression or leak-down test results Oil analysis or evidence proving bearing failure was ruled out Without this information, Kia’s conclusion that the failure is not related to the Theta II defect is unsupported and unverifiable. 4) Concern of Misdiagnosis and Defect Misclassification Based on the symptoms and known Theta II failure patterns, I believe Kia may be misclassifying a progressive bearing-related engine failure as a non-covered

The contact owns a 2015 Kia Sorento. The contact received notification of NHTSA Campaign Number: 21V331000 (SERVICE BRAKES, HYDRAULIC). The contact stated that while driving at 50 MPH, the vehicle failed to accelerate as intended while depressing the accelerator pedal, and the engine seized. The contact was able to coast to the side of the road, and the vehicle failed to restart. Several unknown warning lights were illuminated. The contact stated that prior to the failure, the vehicle was consuming an excessive amount of engine oil. The vehicle was towed to the residence. A mobile mechanic arrived at the residence to inspect the vehicle and removed the serpentine belt, but was unable to crank the engine. However, no cause for the failure was found. The dealer was contacted, and the contact was informed that, as per the manufacturer, proof of all oil changes performed on the vehicle was needed since the vehicle was purchased, and if the proof was not provided, the vehicle would not be repaired under the recall. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 134,000.

Faulty motor I have changed oil early every time and every mechanic I’ve been to said the Kia motor is always doing this ! I still owe 9k on this car! It’s burning oil so fast and not going into the engine this is a on going issue with these motors ! I just now hit 100 k miles no reason for my motor to be blowing please put the recall back on for the 2015 Kia’s!!!

Engine started making rattling sounds during startup and when accelerating. Kia dealer said the engine failed and needed replaced. Repair cost were around $9000.00.

Driving on highway and suddenly heard loud tapping/rattling sound from engine and then engine died resulting in total loss of power steering and acceleration. Was able to coast through an exit and into a parking lot. My entire family was in the vehicle and if we had not been able to coast to a safe spot we could have been involved in a high speed accident. Vehicle was towed to Kia dealership and they diagnosed it as connecting rod failure. No other inspections have been done. No warning lamps displayed before the incident occurred.

What's driving home from work doing 65 mph postal speed limit car begin to overheat and then went in the complete engine failure engine light flashing

On [XXX] while driving at approximately 45 mph the check engine light came on and the car would not accelerate. It was towed to the Kia Dealership in Charleston South Carolina. A Code P1326 was diagnosed. They performed bearing clearance test and it passed. Also Performed software update. The car drove as normal until [XXX]. On [XXX] while on the interstate, going about 65 mph, the check engine light began flashing and car would not accelerate. The car was taken to the Kia dealership in Florence, South Carolina where we were told the knocking sensor needed to up updated. We told them it already had been updated in January by the Kia dealership in Charleston South Carolina. We were then told we had to take it back to Charleston and have that dealership work on the car. We called Kia Customer Care Center because the Florence Kia was refusing to work on the car. Kia Customer care also told us to have the car towed back to Charleston because the Florence Kia was backed up months before they could even look at it. We were told towing would be reimbursed. We had the car taken back to Charleston and have provided all the service records we had to the dealership. It has been over six weeks and still waiting for an answer about the engine. Kia Support says they haven't received any of our services records from the dealership and the dealership says they sent the records. We are not allowed to send the records straight to Kia support. We have asked the Kia Dealership what needs to be done to fix the car but they said they can't tell us until Kia support tells them. We do not know if any inspections have been done of the car yet. We are given very little information by the dealership. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

On April 26, 2025, while driving, my car just stopped in the middle of the road. There were no warning signs, no engine indicator light on on the dash. It just stopped and would not crank.

With little to no warning my check engine, steering, and oil lights turned on and the engine stalled after a loud noise as I was coming to a stop. This occurred on a major highway and could have been catastrophic and dangerous if it occurred at full speed by leaving my vehicle in the middle of the road open to potential collisions that could harm myself or others. Thank goodness i did not have any passengers. I was barely able to pull off to the median and had the vehicle towed to a mechanic who confirmed the engine had seized due to rapid oil loss and found metal debris in the engine oil. They are recommending a full engine replacement. I called the dealership to see if they would agree to inspect the vehicle or see if there had been any reports or recalls associated. I specifically asked them is there was a knock sensor update needed on my vehicle since the mechanic told me there are open complaints about this upgrade not being done and it causing engine failure. The dealership I spoke with stated there are no upgrades or recalls open for my vehicle and refused to inspect the vehicle stating "there is nothing in their system that would indicate an issue". The vehicle is available for inspection for now. I see there are many similar reports over the past year or so for this model. There apparently was a recall for this issue on the following year's model and the 2.4 engine, however I strongly believe the 2015 Sorento 3.3 engine should be thoroughly investigated.

I had catastrophic engine failure while driving with no warning lights indicating my engine was losing oil, the engine and power shut off at 55 miles and hour causing me to lose power steering and power assisted breaking.

Kia Sorento Limited 2015. Regular oil changes on engine using Valvoline synthetic oil. 118k miles on the 3.3L engine. Car is in mint condition. I have all records. At oil change, Valvoline tech mentioned it was low on oil. Never had a tech tell me that before. 24 hours after oil change, I started the engine and heard a pinging noise. I let the engine warm up and the sounds smoothed out. I drove it for less than 5 minutes on the highway at 60mph and warning lights came on and the car had no power from the engine. No loud sounds or knocking at the time. Kia South Dealer is telling me I have to buy a rebuilt engine for $5.5k and will cost $6K to install. That cost is more than the car is worth. With me research, there are two huge issues with the engine. Head bolts loosing and lack of oil distribution on one cylinder causing bearings to melt. I know there is not a recall on this but there is on the same engine for the Hyndai Sante Fe. I baby this car and I feel very betrayed that the engine gave it the way it did. My car looks brand new as I take great care of it but now I have an engine that should last twice as long that is now dead. Shouldn't this engine should be applicable for an extended warranty or for Kia to step up and help with the cost? What can I do? Really appreciate your help!!!!! Sincerely, [XXX] Original Owner since I bought it Dec 2014. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I was driving normally in the Garden State Parkway when suddenly The “Check Engine Light”, The “Check Engine Oil”, and Battery light lighted up causing me to almost losing control and the car shutting down.

Just purchased Sorento and within a week a p1326 code came up. Kia refused to look at car saying they are booked out for months hung up phone on me.got the same response from every Kia dealer. Had a mechanic replace knock sensor and the problem still exists and car not drivable. I'm a single mom with two infants and spent all my money buying this car. I did a Google search on this car about it's dependability and it came back very dependable with engines lasting upwards of 300,000 miles. Mechanic told me Kia needs to replace engine as it falls under class action and lifetime warranty. Kia will not schedule an appointment for me to bring car in. Why are they not pulling these cars off road knowing they are damaged and continue stealing people's money ? This is destroying me and my family I may lose my job over this and I'll lose my apartment. Again I'm a single mom and can't afford to be defrauded like this. These vehicles should have their titles branded if Kia not going to repair them.

The problem started when our car died while driving it. After a few different replacements, Kia decided to replace the entire engine under a recall. After driving the car for a short period of time, the check engine light came on. I went to check the oil and it smelled overwhelmingly like gasoline. I took it to my mechanic who said the check engine light was coming on because of the catalytic converter needing replaced. And the high pressure fuel pump was leaking gas into the oil tank. He said that both of these reasons were because the engine was replaced and they should have all been replaced simultaneously under the recall. I did look it up and there was a second recall for 2015 Kia Sorentos who had there engine replaced, that the high pressure fuel pump should be replaced because it was leaking gas into the oil tank. However, Kia told us we do not qualify for the recall because it was a different type of engine. But this is the exact same car and exact same issue, therefore I feel this should be included under the recall 17V-224.

Car had a blown head gasket. Took it to my mechanic and upon inspection determined that the head bolts had stretched. My mechanic said that it was a common problem and service advisor at dealership also agreed it was a common problem. After a little research found a lot of complaints about this problem. Talked to KIA and was told no warranty or recall for this problem

My car started shaking and making knocking sounds, pulled over and turned it off, tried to turn it back on and it shut off, had it towed to a family/friend mechanic he says my engine needs to be replaced. I’ve never had issues up until now.