2017 Kia Sportage Engine Problems

Car has 84000 miles on it for last 15-20 thousand miles there is a smell of gas in the oil. I took to dealership they charged me to replace a catalytic converter. Not even a year later the cars engine blew up. Now needs a whole new motor there is loud knocking and car will not accelerate.

Car started making noise, slowed down. I stopped the vehicle immediately and parked on shoulder. Towed it to a mechanic shop and they said the engine stopped. It needs an engine replacement.

On 1/10 about 1.5 hour driving out of town later engine started idling low. Pulled over, replaced spark plugs and engine coil and still idling rough. Took vehicle for diagnostics of a broken head in the valve. I drive a 2.4L engine 2017 Kia Sportage LX AWD. only 114K miles. Quoted thousands and thousands, more than care worth to repair.

My 2017 Kia Sportage with approximately 98,000 miles suddenly started using oil at times. It would go for several trips with everything fine and then it would be a quart low. I continued to drive it and check the oil before every trip. At approximately 106,000 miles, I suddenly lost engine power, a small puff of black smoke from the exhaust, and the check engine light came on. I crippled it home after checking all fluids - they were fine. I trailered the car to my mechanic and after diagnosing it, he stated the #1 cylinder had no compression. I brought it home and checked online to find out that this seemed to be a common occurrence with the Sportage. To double check, I took the car to a second mechanic to get the same results except he provided more detail. Compression on #1 Cylinder 0, #2 was 140, #3 145, #4 140. He stated the compression should be above 175. My safety issue was I could have been stranded on I49 and if this had happened at night, I may not have been able to get it home. I took the vehicle to Crain Kia, Fayetteville, AR. when the first Check Engine Light came on and they stated it was shown as low engine oil even though it had oil in the engine and that it showed low compression on Cylinder 4. I now have a vehicle with 106,048 miles that without major engine repairs is worthless to me.

Kia Sportage has had serious oil consumption issues for 3 years. And recently is loosing pressure in cylinder 2 as a result of excessive carbon build up on valves and head from oil burning in the combustion chamber.

October 2, 2025 no oil in engine. car has always had regular oil maintenance. Dealer put almost four quarts of oil in car to start an Oil Consumption Test of 1,000 miles. November 22, 2025 driving about 70 miles an hour, on the 241 Toll Road car loses powder, speed dropped to about 20 miles an hour. I was able to make it to the highway shoulder where the engine struggled to stay running. I cut the engine off and it would not start again. Had to be towed to Covina Kia. Still had over three hundred miles before the 1,000 mile test. Last oil change July 9, 2025 at Covina Kia. I bought my 2017 Kia Sportage in October 2016 brand new. I'm the only one to drive it. I have always taken it back to dealer for servicing. All my oil changes were done with the dealer and on time. I understand there is a class action lawsuit against kia for oil starvation and engines seizing, (theta II sc147). All indications suggests my engine also suffered the same manufacturer defect as claimed in the lawsuit. AND I WANT TO BE COMPENSATED KIA Manufacturer is aware of there engine problems and should be more proactive, before someone is killed

On 11/21/2025, while operating my vehicle, I experienced a critical engine failure. The engine failed a compression test, with readings as follows: Cylinder 1: 125 PSI Cylinder 2: 60 PSI Cylinder 3: 25 PSI Cylinder 4: 3 PSI As a result, the engine had no compression in multiple cylinders, preventing the vehicle from starting. The vehicle exhibited [smoke, stalling, or other observable symptoms]. This failure appears consistent with known issues in the Theta 2 GDI engines, including risk of engine failure or fire. I had not received notification of any required software updates or recalls relevant to this issue. Despite multiple attempts to resolve this with the dealer, including [dates of service attempts], the dealer refused to cover a replacement engine under warranty. Impact on Safety: The sudden engine failure rendered the vehicle inoperable and posed a significant safety risk due to the potential for stalling or fire while driving. Additional Notes: I am submitting this report to request that the NHTSA investigate this potential safety defect.

The Catalytic Converter in the Kia. We were driving to Texas to take my kids out for mini vacation and it’s cut off right in the middle of the highway. My car was running just fine everything was fix properly. Can you check in the Catalytic Converter and see if it safely issue.

Car shut off middle of driving. mechanic said engine is seized, and no oil in engine. car has always had regular oil maintenance. there is a class action lawsuit against kia for oil starvation and engines seizing, (theta II sc147). last oil change was 4,500 miles ago. all indications suggests my engine also suffered the same manufacturer defect as claimed in the lawsuit. Balise Kia in West Springfield MA refuses to do the inspection of the engine without proof of every single oil change since i purchased the vehicle in 2016, which is an impossible request. Corporate also stated that it is the dealership's discretion to demand oil receipts, even though I offered to print credit card statements instead, and I purchased a car fax report that has them listed beginning in 2019, but unfortunately none reported before then. I provided them with receipts of no oil changes missed since 2024. still denied the inspection. there were no warning lights prior to the engine seizing.

My Kia engine has failed and Kia is refusing to submit or honor my engine replacement claim under the known engine defect class action/recall. The dealer told me that the claim cannot be submitted because a prior owner did not receive the KSDS (Knock Sensor Detection System) software update. Kia then changed their reasoning and stated the engine failure was “for another reason,” but still refuses to provide documentation or allow the claim to be processed. I was left without a vehicle, charged excessive diagnostic fees, and stranded in dangerous winter weather conditions (around -30°F wind chills). The dealership refuses to send the engine claim to Kia, stating the “missing KSDS update” as the justification, even though the engine failure was unrelated to that software and the recall states that Kia must prove the update’s absence caused the failure before denying coverage. Kia’s refusal has resulted in an unexpected repair estimate of approximately $6,000, no loaner vehicle, and severe hardship. Their actions appear to violate recall obligations and consumer safety protections, as I am being denied a known-defective engine replacement due to a prior owner’s failure to complete a software update. I am requesting investigation and intervention, as Kia is not honoring the recall process or the class action settlement requirements.

On November 2, while driving my 10-year-old son to a soccer game, the vehicle suffered a sudden loss of power at road speed. The vehicle's failure to provide a "limp-home mode" or any sensor warnings prior to stalling created a significant life-safety risk for my son and me as we had to coast across traffic to a safe location where the car stalled. •No Warning Indicators: There were no prior "Check Engine" lights, oil pressure warnings, or temperature fluctuations. •Hazardous Failure Mode: The vehicle stalled completely in active traffic. I was forced to perform an emergency maneuver, coasting across lanes of traffic to reach a safe shoulder. •Outcome: The vehicle was towed to Ourisman Kia of Bethesda, where service technicians diagnosed "severe internal engine failure."

See attached document for complaint.

On October 16, 2025 my car lost ability to accelerate while driving on highway. Just as the car was losing motive power the engine light came on. Car was then towed to a mechanic. After looking at the car the mechanic reported that the engine had seized and I would need a new engine. The mechanic was able to get the engine moving. The week before I had put oil in the car as I noticed it was going through oil faster.

My wife was driving home from work on 10-15-2025 when the car started to lose power and started shaking, vibrating really bad. She got off the exit and at the red light and it died. She called me crying and scared. She started the car back up to try to get the car home and she said the car is vibrating and shaking really bad and I’m so scared and it died again in traffic. I told her to pull over and I would come get her and she did make it home. I look at the car and found it had a misfire on cylinder 2. Cylinder 2 had NO COMPRESSION. I did take it to Kia and they confirmed the diagnosis. Here is where the problem lies. The technician that scanned my car purposely miss diagnosed it. He wrote it only had burnt valves and cylinder. He never said anything about the hole in my piston. He took a picture of it and it has a hole on top. He said the car was drivable; are you kidding me. When you start the car the voice comes over the speakers and says the computer has detected a major engine problem. My cars vin # confirms that it qualifies for the class actions settlement because of the engine that is in the car. They are known to fail because of excessive oil use, starvation of oil, bad piston rings, bad rod bearings. We have been without her car since this happened. Kia said the car was drivable and I can promise you it is not. This car is not safe at all to drive. It loss all power in traffic and it kept dying.

Car started having issues with retaining oil and was blowing oil out of the oil fil cap, oil changes were being performed every 3 weeks due to continued oil loss without cause. Car started shaking while driving on the highway, check engine light started flashing and car lost all power. Car was towed from highway to KIA authorized dealer where they performed a full engine replacement, replaced serpentine belt, oil filter and air filters. Picked up vehicle from dealership approx. 2 weeks later, engine was still blowing oil out of oil fill cap and entire vehicle smelled like used oil. Dealership also refilled engine with wrong type of oil upon replacement of engine. Car requires 5W-20, dealership put in 5W-30 instead of correct oil.

The contact owned a 2017 Kia Sportage. The contact stated that while driving 55-60 MPH on the highway, the contact noticed smoke coming from underneath the hood. The contact stated that there was a significant amount of smoke inside the vehicle. It was unknown whether a warning light illuminated. The contact exited the vehicle and noticed that there were police officers 20 ft. away from the vehicle. The police officers advised the contact to get away from the vehicle. The contact noticed flames under the hood, by the engine compartment. The contact stated that the entire vehicle caught on fire. The contact stated that the entire vehicle was completely burned to the metal. The fire was extinguished by the fire department. A fire department report was filed, and it was reported that the fire originated from the engine. A police report was filed. A firefighter sustained an unknown injury and was taken to the nearest hospital. The contact did not sustain physical injuries but sustained mental injury, lack of sleep, anxiety, and was upset. The vehicle was towed to a tow lot and was totaled. The dealer was not contacted. The manufacturer was contacted, and a case was filed. The manufacturer sent an investigator who inspected the vehicle and stated that the cause of the fire was undetermined. The manufacturer provided vehicle rental assistance as a settlement. The failure mileage was approximately 115,000.

Car starting shaking violently while on the highway. Daughter pulled over and parked car on side of road. Had to have car towed as it would not restart. Engine failure.

Blown engine P1236 knock sensor circuit

The contact owned a 2017 Kia Sportage. The contact stated that while driving at 75 MPH, she observed black smoke emanating from the engine compartment. The contact was able to pull to the shoulder of the roadway and switch the vehicle off. After a visual inspection, she observed flames within the engine compartment emanating from a source unknown to the contact. Local emergency service arrived and was able to extinguish the fire, later attributing the fire to an unspecified equipment failure. No warning lights were illuminated. The vehicle was towed to a tow yard and deemed a total loss by the contact's insurance provider. A fire report was filed. A police report was not filed, and no injuries were reported. 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 149,000.

The contact owns a 2017 Kia Sportage. The contact stated that while driving 70 MPH, the vehicle stalled and then lost motive power with several unknown warning lights illuminated. The vehicle was towed to an independent mechanic, where it was diagnosed with engine failure and the engine needed to be replaced. The vehicle was not repaired. The vehicle was towed to the dealer, where the same diagnostic test information was provided. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 101,000. The VIN was not available.