2021 Kia Soul
Problems, recalls and owner-reported issues
Engine is the leading concern among 234 owner complaints filed for this model year. This is the 8th highest complaint count among 16 Soul model years with reports.
Of the 2021 reports, 12 involved a crash and 3 involved a fire. 5 people were injured.
What owners report most often
Recalls and investigations
Engine and engine cooling, engine, hard parts internal/mechanicalFeb 17, 2025
Kia America, Inc. (Kia) is recalling certain 2021-2023 Seltos and Soul vehicles. The piston oil rings may have been manufactured incorrectly, which can result in engine damage.
Engine damage can cause a vehicle stall or fire, increasing the risk of a crash or injury.
Dealers will inspect and replace the engine as necessary, free of charge. Dealers will also install piston-ring noise sensing system (PNSS) software, free of charge. Owner notification letters were mailed April 4, 2025. Owners may contact Kia customer service at 800-333-4542. Kia's number for this recall is SC336.
Campaign 25V099000 on NHTSA.gov
EngineApr 13, 2021
Kia Motors America (Kia) is recalling certain 2020-2021 Soul, and 2021 Seltos vehicles equipped with 2.0L Nu MPI engines. The piston oil rings may not have been properly heat-treated, which may result in engine damage.
A damaged engine may stall, increasing the risk of a crash. In addition, oil may leak onto hot exhaust components, increasing the risk of a fire.
Kia will notify owners, and dealers will inspect and, if necessary, replace the engine, free of charge. In addition, Kia will deploy Piston Ring Noise Sensing System (PNSS) software. The recall began June 11, 2021. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC209.
Campaign 21V259000 on NHTSA.gov
Representative owner complaints: engine
180 reports, newest first. Show all
Engine, Apr 7, 2025
I have contacted Kia several times about this recall, the latest being today. I tried to schedule an appointment with Galeana Kia in Fort Myers, FL. The service departement told me there was no remedy for this recall. I referred the dealer to the Kia website. "Remedy DEALERS WILL INSPECT AND REPLACE THE ENGINE AS NECESSARY, FREE OF CHARGE. DEALERS WILL ALSO INSTALL PISTON-RING NOISE SENSING SYSTEM (PNSS) SOFTWARE, FREE OF CHARGE. OWNER NOTIFICATION LETTERS ARE EXPECTED TO BE MAILED APRIL 4, 2025. OWNERS MAY CONTACT KIA CUSTOMER SERVICE AT 800-333-4542. KIA'S NUMBER FOR THIS RECALL IS SC336." I then called Kia directly. They told me to contact the dealer. I told them I already had done so. The Kia rep told me that I had to wait for the dealer. I said I don't accept that because the KIA website lists the remedy. I eventually spoke to two supervisors. I was told that Kia does not own the dealership, so they can't force them to service the recall. Kia told me that if I went to the dealer now the dealer would bill me. I said that is unacceptable. In November 2024 I had an issue with my Kia that may be related to this recall. My vehicle stalled and I could not restart it. I had it towed to Galeana Kia. Turns out that the oil level was low in the engine. However, there was never any warning or warning light indication that the oil level was low. I was billed $315.96. I expect to receive a refund of that amount as this is related to the recall.
Engine and engine cooling, Apr 7, 2025
The contact owns a 2021 Kia Soul. The contact stated that while driving at various speeds, the vehicle had stalled. During the failure, the check engine warning light was illuminated. The vehicle was taken to the local dealer who diagnosed that the oil level was extremely low, due to a faulty cam shaft. The vehicle was not repaired. The contact was informed that the VIN was included in the NHTSA Campaign Number: 25V099000 (ENGINE AND ENGINE COOLING). The contact indicated that the vehicle had experienced the failure listed in the recall. The failure mileage was 96,000.
Steering, Service brakes, Engine, Apr 1, 2025
Hi I keep needed a oil change on this vehicle please have Kia to check why thanks and I sometimes smell oil out of no where thanks [XXX] [XXX] and I have had serval oil changes at Walmart only since I got the vehicle from carmax INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Engine and engine cooling, Mar 28, 2025
The contact owns a 2021 Kia Soul. The contact stated that while driving at various speeds and accelerating, the vehicle occasionally shuddered or stalled, forcing the contact to pull over onto the side of the road to restart the vehicle. The check engine warning light was illuminated. The vehicle was taken to a local Auto Zone, where a diagnostic scan retrieved information for a cylinder #1 misfire. The vehicle was taken to a local dealer, where the vehicle was diagnosed, and the contact was informed that further diagnostic testing was required to determine the cause of failure. The vehicle was not repaired. The contact referenced NHTSA Campaign Number: 25V099000 (ENGINE AND ENGINE COOLING) as a possible cause for the failure. The manufacturer was notified of the failure. The approximate failure mileage was 20,000.
Engine, Mar 20, 2025
car has a recall, engine keeps stalling. engine is knocking due to oil pistons
Engine and engine cooling, Mar 19, 2025
The contact owns a 2021 Kia Soul. The contact stated that while driving at an undisclosed speed, the vehicle inadvertently lost motive power. The contact was able to pull over to the shoulder of the roadway, where the vehicle was able to be restarted. After restarting the vehicle, the vehicle returned to normal functionality, but the failure became a regular occurrence. The low oil warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 25V099000 (Engine and Engine Cooling); the VIN was included, but the vehicle had not yet been repaired. The manufacturer was not notified of the failure. The failure mileage was 92,000.
Engine, Mar 17, 2025
The engine in my 2021 Kia Soul has been experiencing serious performance issues consistent with Recall SC336. The vehicle has erratic RPM fluctuations while idling and has stalled multiple times at stoplights and in traffic. When this happens, it fails to restart immediately, leaving me stranded and creating a serious safety risk. The vehicle has been at Step One Kia in Fort Walton Beach, FL, for 2 weeks. The dealership claimed the issue was caused by a clogged air filter, replaced it, & stated the car was “adequately repaired.” However, when I attempted to pick up the vehicle, the Check Engine Light was still on. The owner of the dealership took the keys back and said I would receive a follow-up call on Monday. No call was ever received. I contacted Kia Headquarters and was told to “pick up the car and drive it if I choose to” because there is no remedy available. When I requested a loaner vehicle, I was initially told it was not guaranteed because this was "not an engine issue." When I pointed out that the symptoms were directly related to engine failure, the representative backtracked and said a loaner was simply "not guaranteed." 1. A clogged air filter does NOT cause stalling at idle or failure to restart. A clogged filter would cause gradual power loss, not sudden shutoffs. 2. The Check Engine Light remained on after the repair, proving the issue was not fixed. 3. The dealership refused to conduct recall-related tests, including the PNSS and oil consumption tests. The car stalls in traffic, increasing crash risk. It fails to restart immediately, leaving me stranded. Kia’s refusal to diagnose the issue properly puts my safety at risk. The vehicle is still at the dealership but has not been properly inspected for recall-related failures. Kia refuses to acknowledge a remedy and denies a loaner vehicle. Since these symptoms match Recall SC336, I urge NHTSA to investigate Kia’s failure to inspect and repair affected vehicles.
Engine, Mar 17, 2025
[XXX], driving down highway [XXX] the car lost power. I was able to start it up again but was misfiring where I drove it home. I had it towed on March 12 to Koon Kia Service, 9610 Reistertown Road, Owings Mill, MD 21117-4128. On Friday, March 14, 2025 I spoke with Blaine in the Service department and he said I after a diagnostic my car indicates that I need a new engine to repair my car. Today, I called and spoke with Blaine and told him about the recall SC336 and he said the was no remedy for this recall. I told him I would call Kia Customer service which I did and received case #[XXX] from Denise. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Engine, Mar 13, 2025
The contact owns a 2021 Kia Soul. The contact stated while driving 30 MPH, the accelerator pedal was depressed, and the vehicle failed to respond. There were no warning lights illuminated. The contact was completing a U-turn, and the accelerator pedal was depressed to the floorboard however, the vehicle lost motive power. The contact came to a complete stop while approaching a red light; after the light turned green, the contact depressed the accelerator pedal and the vehicle responded and was driven to the destination. The following day the contact’s wife attempted to drive the vehicle; however, the failure recurred, and the vehicle lost motive power. The check engine light warning illuminated. The following day, the check engine warning light illuminated again while the contact was driving, and the vehicle stalled. The contact towed the vehicle to the residence. The vehicle was then towed to a dealer where it was diagnosed with engine failure. The local dealer was contacted; however, the vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 46,500.
Engine, Mar 13, 2025
The contact owns a 2021 Kia Soul. The contact stated that while driving at an undisclosed speed, the vehicle inadvertently lost motive power. The contact was unable to pull over to the shoulder of the roadway and was assisted in pushing the vehicle to a safe location, where the vehicle failed to restart. The check engine warning light was illuminated. The vehicle was towed to an independent mechanic, who diagnosed a failure with the fuel pump. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 80,000.
Engine and engine cooling, Mar 10, 2025
The contact owns a 2021 Kia Soul. The contact stated that while operating the vehicle, the check engine warning light remained illuminated, and the engine experienced excessive oil consumption. Eventually, while at a stop light with the Auto START/STOP activated, the vehicle failed to restart and was towed to the local dealer. The dealer indicated that the engine failed due to a loosened oil filter, which caused oil to leak from the engine. The contact was advised that the engine needed to be replaced. The vehicle was later towed to the local mechanic who diagnosed that the piston rings were faulty and had caused the engine to fail. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in NHTSA Campaign Number: 25V099000 (ENGINE AND ENGINE COOLING). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 141,000.
Engine, Mar 9, 2025
The engine in my 2021 Kia Soul has been experiencing serious performance issues that align with Recall SC336. The vehicle frequently exhibits erratic RPM fluctuations while idling, and on multiple occasions, it's completely shut down while stopped at traffic lights or in traffic. When this happens, the vehicle does not restart immediately, leaving me stranded / creating a safety risk. I reported this issue to an authorized Kia dealership, but they refused to perform proper diagnostic tests related to the recall. Instead, they blamed a clogged air filter as the cause of the stalling. This explanation does not make sense. Why the Dealership’s Explanation is Incorrect: 1. A clogged air filter does NOT cause sudden stalling at idle or failure to restart. If an air filter were completely clogged, the engine would lose power under acceleration, not stall at idle. The engine requires very little air at idle, so a dirty filter would cause gradual power loss, not sudden shutdowns. 2. My symptoms match Recall SC336, which involves piston oil ring failure. Erratic RPMs, stalling, and failure to restart are all signs of compression loss or internal engine damage. 3. The dealership is refusing to conduct recall-related tests. I requested a PNSS (Piston Noise Sensing System) test and an oil consumption test, but the dealership refused. Instead, they tried to charge me for an air filter replacement, ignoring possible recall-related failure. Safety Risks: The vehicle stalls at stoplights and in traffic, increasing crash risk. The car fails to restart immediately after shutting down, leaving me stranded. Inspection Status: The vehicle is at the dealership, but they have not inspected it for recall-related failures. Kia Corporate was contacted but supported the dealership’s incorrect assessment. Warning Signs Before Failure: Erratic RPM fluctuations at idle began before the first shutdown. Check Engine Light was on but cleared but cleared by the dealership.
Engine, Mar 7, 2025
I am experiencing a serious safety issue with my 2021 Kia Soul. My vehicle is consuming excessive oil, which should not be happening under normal operating conditions. The check engine light is on, and while driving, the car suddenly shuts off and displays the battery symbol before losing power completely. This has happened multiple times, creating a dangerous situation where my vehicle loses power unexpectedly on the road. I took my car to a mechanic, who confirmed that the engine is consuming oil at an abnormal rate. The mechanic also informed me that there is a known recall on certain 2021-2023 Kia Soul models due to defective piston oil rings, which can cause excessive oil consumption, engine failure, and even fires. However, when I contacted Kia’s customer service and provided my VIN, they stated that my vehicle is not included in the recall, despite exhibiting the same symptoms. This is a serious safety hazard, as my vehicle is at risk of sudden engine failure while in motion. Kia has issued recalls for similar models, but my specific VIN has been excluded, even though I am experiencing the exact same defect. I am requesting that NHTSA investigate this issue further to determine whether more vehicles should be included in the recall before this defect leads to accidents or injuries. I am available to provide further documentation, including inspection reports, oil consumption records, and any additional information needed.
Engine and engine cooling, Electrical system, Mar 6, 2025
The contact owned a 2012 Kia Optima. The contact received notification of NHTSA Campaign Number: 25V099000 (ENGINE AND ENGINE COOLING). The contact stated that while starting the vehicle, there was an abnormal ticking sound coming from the vehicle. The contact stated that there was an abnormal burning electrical odor. No warning lights were illuminated. The vehicle was taken to the dealer; however, no cause for the failure was found. The vehicle was not repaired. The contact stated that on other occasions while the vehicle was idling, the RPM fell. The dealer and manufacturer were made aware of the failure. The failure mileage was approximately 20,000.
Engine, Mar 5, 2025
ON WAY TO WORK MY CAR STALLED ENTERING HIGHWAY TOOK CAR IN TO GET CHECKED THEY SAID THERE WAS NOTHING WRONG WITH IT ..IT NEEDED OIL CHANGE .THAT WAS APPRO. 60000 MILKES...THEN JULY 2024 EXITING HIGHWAY IT STALLED AGAIN I HAD TO RESTART HAD IT CHECKED IT WAS ABOUT 72000 MILES THEY SAID SAME THING. THEN IN SEPT OF 24 IT STALLED AGAIN DAY AFTER OIL CHANGE ENGINE LIGHT CAME ON. i TOOK IN AGAIN THEY SAID ITS THE OIL PISTON RINGS SAID MY ENGINE NEEDS REPLACED AND ITS NOT UNDER WARRANTY. sO NOW ITS 8000 OR MORE MONEY TO REPLACE ENGINE. i HAVE KNOCKING SOUNDS LIKE SOMEONEONE IS THROWING JACK AROUND CAR...
Engine and engine cooling, Mar 3, 2025
The contact owns a 2021 Kia Soul. The contact stated that while driving at an undisclosed speed, there was an abnormal sound emanating from the engine compartment. The check engine warning light was illuminated. The vehicle was towed to an independent mechanic, who diagnosed a failure with the piston rings. The vehicle was not repaired. The vehicle was taken to the dealer, who confirmed the diagnosis. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 25V099000 (Engine and Engine Cooling); but the contact was informed that the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was 62,000. The VIN was not available.
Engine and engine cooling, Mar 3, 2025
The contact owns a 2021 Kia Soul. The contact received notification of NHTSA Campaign Number: 25V0999000 (Engine and Engine Cooling); 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 while driving at various speeds, the vehicle suddenly stalled and shut off unintendedly. The contact restarted the vehicle and continued driving. There was a knocking sound coming from the engine compartment while driving at various speeds. The failure was intermittent. There were no warning lights illuminated. The dealer was contacted. The manufacturer was not made aware of the issue. The failure mileage was 67,533. Parts distribution disconnect.
Engine, Feb 28, 2025
Consistent oil burning of about one quart per 1,000 MI I think an exact number would be .8 per 1000 occasional misfiring and stalling presumably due to improperly heat treated piston rings like other recalls
Engine, Feb 26, 2025
Engine failure of the 1.6 liter turbocharged GDI engine at 102,670 miles. Engine light went on while driving back on the Atlantic City Expressway and engine lost power reduced to 45MPH. Had car towed to dealer and was told the engine was no longer usable and had to be replaced. KIA engines are failing at an alarming rate and a recent recall of the same year KIA Soul is in effect. My KIA engine is not the recalled engine but my failure was pretty much the same as the 2.0 Liter engine. I think an investigation of my 1.6 liter turbo GDI should be made as well.
Engine, Visibility/wiper, Feb 23, 2025
Engine does not work properly. It is loud and car shakes. Dealership had me do maintenance and did not fix the problem. Rear windshield wiper pours out fluid and turns on with no reason. They say there is a short however it turns on and blocks my rear window view every while just driving, or using my turn signal, I have to mess with the switch while driving to finally get it to stop.
Electrical system, Service brakes, Engine, Feb 19, 2025, crash
We were going south on [XXX] about 25 mph intending to make a left turn onto [XXX] My wife said “slow down or you won’t make the turn” to which I replied “I am trying but it won’t slow down” As I applied the brakes to slow down to turn, instead the car started to speed up and I could not make the left turn. I continued down the road trying to slow down enough to attempt a left turn on to [XXX] But the car continued to go even faster, so I pumped the brakes trying to slow down and get the car to stop. Instead, the car kept speeding up faster. In seeing I was close to the end of the dead-end road I swerved to the right to avoid the parked Train cars at the end of the road only to crash into the corner of a building which stopped us. At which time I was rendered unconscious. Something caused the car to speed up excessively and the brakes were unresponsive and should be available for further inspections. Not being able to physically get the car under control put the safety of my wife, myself, and others at risk. In researching I have found that this problem has been reproduced in real time and experienced by multiple others in recent years. Our insurance company has had the cars EDR data inspected although further inspection is warranted. There were no prior warnings or symptoms of this problem until the above incident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Engine, Feb 12, 2025
The contact owns a 2021 Kia Soul. The contact stated that during a routine inspection, the contact became aware that the oil level was low. No warning lights were illuminated. The vehicle was taken to a local dealer to be diagnosed and the contact was informed that a more comprehensive diagnostic test was needed to confirm the cause of the failure. The contact related the failure to NHTSA Campaign Number: 21V259000 (Engine); to the failure; however, the VIN was not included. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 34,000.
Engine, Feb 11, 2025
Engine stopped on the highway and was found with no oil. Probably due to oil over consumption.
Power train, Engine, Oct 20, 2024
1.) We were driving to Nashville and once my car got around 70,000 mile my check engine light came on. Then my car started to make a humming noise. We pulled over to check the oil the oil was fine. Once we got back into the car and left the gas station the light started to blink. Yes 2.) We were on the highway, and if the engine could have blown up or we could've got stuck on the way there and back. Also, the where the car started to act up was around a bad neighborhood. 3.) Yes 4.) Yes 5.) The car started to hum but once my car hit 70,000 miles the check engine light came on and started to flash.
Engine, Jul 27, 2024
Week of July 22, 2021: - initial problem started with pulling into a slightly sloped driveway and car engine dying even though clutch down and braking. Acted as though clutch not pressed down. - running errands around town. When I initially started driving in first gear, very jerky (like I didn’t know how to drive stick). Lots of stop and go and continued driving this way. Heading home, when I let foot off gas, car died. I would have to start, while trying to come to stop. If I had to stop, I had to keep foot on accelerator so it wouldn’t die. When I started driving again, loss of power-so much that I had to make sure traffic totally clear if having to cross traffic. Every once in a while, while shifting, I could hear something loud in engine. - Immediately contacted Kia to get in for service…soonest available appointment is August 8, 2024. They had me check oil and barely any on dipstick. Car has only 23,750 miles. They told me that “it’s not unusual to have to put a quart of oil in every 1,000 miles”. Red flag to me…seems very excessive to need to do that on this new of a car. The service advisor also told me that it’s also not unusual to not have a warning light come on for low oil. I put in two quarts of what was used during last oil change and what is recommended - Mobil 1 5W20 full synthetic. When I started car, actually sounded worse and now the Check Engine light is on. The car is too dangerous to drive so called Kia Roadside Assistance and had it towed to dealer. Not sure when they will get to it to be able to determine problem but I am without transportation. Purchased an extended warranty when I bought the car - you think I should have a loaner. Seems like lots of Kia Soul owners having same issue.