2018 Kia Soul Engine Problems

My car has very high oil consumption. I regularly take it for oil changes and have never missed an oil change. In between oil changes I need to put anywhere between 2-3 bottles of oil in. I have taken it in to the dealership for a couple of oil consumption tests that both failed step one so they kept it overnight and did some kind of flush or cleanse and then it passed step 2 both times. The car is good for a little while and then it starts consuming alot of oil again. Due to the high consumption of oil my catalytic converter is going bad and the engine seems very sluggish at times. I do have a yellow check engine light constantly on and the code is for the catalytic converter due to high oil comsumption. The dealership told me they can't do anything about the warning light until it starts to flash yellow instead of being solid yellow. I brought it into the dealership for that and they acknowleded my year make and model are known for excessive oil consumption which can cause the catalytic converter to go bad. They won't do anything about it because it passes step 2 of oil consumption test. but they keep giving me a hard time about just permanently fixing it under the warranty since it passes step 2 even though I am back months later for the same problem. I feel they are trying to run my warranty out so they won't have to fix it. My car now won't pass an emissions test because of the catalytic converter.

NHTSA ID

11756115

Incident

Apr 25, 2022

The vehicle is suffering from an extreme internal engine oil consumption defect, burning approximately 3 quarts of engine oil every 500 to 600 miles with no external leaks. The internal oil burning heavily fouled the vehicle's ignition system (spark plugs and coil packs), causing severe engine misfires and a sudden vehicle stall while operating in motion on public highways. This unexpected loss of motive power creates an extreme safety hazard. The local dealership, Paramount Kia of Hickory, refused to follow proper factory Technical Service Bulletin (TSB-ENG219) testing protocols to document the defect, leaving the consumer operating an unsafe vehicle.

NHTSA ID

11752835

Incident

Jul 22, 2026

My 2018 Kia Soul has failed on oil consumption test and needs and engine replacement. Kia knows of these issues with these cars but will not cover the engine replacement cost bc the class action suit does not cover oil consumption failure only rod bearings. This will be an issue sooner or later with the oil problem. Kia has several recalls on other vehicles for the exact same thing.

NHTSA ID

11751809

Incident

May 22, 2026

Car stalls in traffic repeatedly. Code identified crank shaft .

NHTSA ID

11749862

Incident

Jul 7, 2026

I am losing the engines oil every 500 miles. It is an ongoing problem and I have to check my oil on a regular basis so the engine does not seize or catch fire as my mechanic has instructed/alerted me to do.

NHTSA ID

11747752

Incident

Jul 1, 2026

Engine control system is STILL faulty. The engine light will not go off, even after the so called recall Software fix and the brand new engine put in my car in 2025 among other MULTIPLE brand new parts and repairs to my car trying to resolve the engine issue, oil consumption and fuel/gas consumption at rapid and alarming rate, every time after I fill my gas tank.

NHTSA ID

11746423

Incident

Dec 31, 1969

On [XXX], my 2018 Kia Soul (VIN [XXX] ) displayed DTC P1326 with a blinking check engine light and went into limp mode. Ray’s Automotive documented P1326 in writing, added oil, and cleared the light only to allow safe transport. At Greenway Kia (Avenues), they charged $199 and refused to create a Vehicle Diagnosis Number (VDN) or perform the Bearing Clearance Test (BCT) unless they could reproduce the code. This directly contradicts Kia TSB PI2107Y/Z (Rev 1, 11/07/2024), which states: “A Vehicle Diagnosis Number (VDN) must be created with or without DTC P1326, after scanning for DTCs, prior to performing PI2107Y/Z.” Ray’s found low oil, but my next scheduled oil change was still 300 miles away. I refused to accept the vehicle back because limp mode is unsafe for my daughter (primary driver). The dealer recently told me to pick it up anyway. Kia Corporate opened Case #[XXX] after 2 separate 2-hour Kia recorded calls on June 1 and June 3, 2026, but continues to refuse the required diagnostic. This is a known manufacturing defect covered under Kia Product Improvement Campaign PI2107 and the class-action engine settlement. The refusal creates a serious safety risk for my daughter and family. Requested Action: Require Kia to follow the published TSB (VDN creation and Bearing Clearance Test with or without active code) and provide a rental vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11741736

Incident

May 27, 2026

I am writing to report safety concerns regarding my 2018 Kia Soul Plus. I have been experiencing several engine issues, including knocking noises, hesitation during acceleration, excessive oil consumption, and an active check engine light. Recently, while driving with my daughter, the vehicle began shaking and the check engine light flashed three times. Although I strictly adhere to the recommended maintenance schedule, these issues persist. My mechanic identified code P0455, but a smoke test did not reveal a leak. Additionally, despite having a full tune-up in August [2025] at 105,636 miles, I am being told I require another tune-up due to engine misfires. I am concerned about the frequency of these repairs and the overall safety of the vehicle’s engine.

NHTSA ID

11735537

Incident

Apr 25, 2026

My 2018 Kia Soul with the 2.0L Nu GDI engine is experiencing severe oil consumption of approximately 1 quart every 300–400 miles. The engine and lubrication system are available for inspection upon request. My check engine light is currently on. The dealer performed several recalls on the vehicle, including PI2107 (KSDS), SC226, and CS2311A, but refused to perform the required oil‑consumption test described in TSB ENG 222 (Rev 8). The service technician stated that because the oil‑consumption test is “not on the VIN,” they would not perform it under warranty. I was told I could pay $250 out of pocket for the test, but that even if the test confirmed a defect, the dealership would not cover any repairs. I was also told to “run the car until the motor seizes up” before they would help. This instruction is unsafe and contradicts Kia’s own safety systems, including KSDS, which is specifically designed to prevent engine seizure while driving. Driving a vehicle with rapid oil loss until the engine seizes can cause sudden loss of power, loss of steering assist, and a crash hazard. The problem is ongoing and repeatable, but the dealer refused to diagnose it properly. I am reporting this because the dealership refused to perform required safety‑related diagnostics and instructed me to operate the vehicle until catastrophic engine failure occurs, creating a significant safety hazard for me and other motorists.

NHTSA ID

11733377

Incident

Apr 23, 2026

My car was fine one day the next day without warnings was driving on highway and it starting riding sluggish making a rough noise I had pull over to the side of highway turn car off started back up drove home and that was the day my nightmare started. I took my car to the dealership and had a diagnosis performed and they said i need a new engine 8000.00. on 07/25/2024my car was having similar problems the y said it was a knock sensor they fixed that problem. Now I'm02 without transportation. this engine has has a lot of issues. can anybody help with this problem.

NHTSA ID

11731380

Incident

Feb 10, 2026

My KIA Soul 2018 caught on file while driving. The whole engine was in flames. I didn't want to die because my car has a manufacturing issue that KIA was not aware about. The dealership I've purchased the car from denied to give me a copy of the mechanical inspection done at the dealership Stonebriar Chevrolet in Frisco, TX. The flames started under the car and made its way to the engine, smoke was coming from the AC vents. People were able to put the fire down before it got to the gas tank. Due to the seriousness of the damage, the car stopped working and we left it on the side of the road.

NHTSA ID

11730985

Incident

Apr 10, 2026

The contact owns a 2018 Kia Soul. The contact stated that while driving at an undisclosed speed, there was an abnormal knocking sound coming from underneath the hood. The check engine and oil warning lights were illuminated. The vehicle was towed to a local dealer, where it was diagnosed with a blown engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. Upon further investigation, the contact related the failure to NHTSA Campaign Number: 20V750000 (Engine); however, the VIN was not included. The manufacturer was made aware of the failure. The failure mileage was approximately 95,000.

NHTSA ID

11724558

Incident

Feb 17, 2026

Mileage

95,000 mi

The engine seized up at 165,000 miles. According to one [XXX] at Trinity Automotive in Fairfield, Ohio, it's a known issue. According to [XXX] at PrebCo in Eaton, Ohio, the issue is related to low-pressure piston rings. Compression tests showed between 0 psi in one cylinder and between 55 and 58 psi in the other three cylinders. These issues have been verified at Matt Castrucci Service Center. With a GDI engine, I had been chasing down the usage of too much oil for several months. I get oil changes at 3,000 miles, and I would be 1/2 quart to 1 quart low at 3,000 miles. Dealership service staff in Beavercreek, Ohio, said that Kia considers the usage of one additional quart of oil per 1,000 miles to be "acceptable" - that makes zero sense. I was told that they would do a piston soak, and they directed me to a formal procedure on Kia's website. I used this process, and it definitely cleaned out all of the carbon. This did not fix the issue. Taking my youngest daughter to a dinner following her high school national honors society induction, I experienced an engine knock as I accelerated onto the I75 north. It felt like a strong jolt back. The 2018 Kia Soul Plus has been a 3,100-pound roadside decoration since November 2025. I still owe $14,000 on this loan, and I cannot afford an additional car payment. Replacement of the engine will be $8,500. Kia customer service told me this is an out-of-pocket expense as their warranty ended at 150,000 miles. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11724268

Incident

Nov 13, 2025

ENGINE SHUT OFF WHILE DRIVING IT DOWN THE HIGHWAY Purchased 8/5 from reseller, who had driver it over 200 miles with no issues. Had it inspected that day and no issues found. Scheduled appt w/ Clay Cooley Kia to drop off 8/12 to have warranty recalls addressed. Clay Cooley inspected and found no issues, verified in good shape; work completed 8/14. On 8/18, after driving it less than 183 miles, the vehicle COMPLETELY SHUT DOWN on the highway. The check engine light came on immediately before the car shut down, but that was all. It was incredibly dangerous. Searched online and discovered that this has been a know issue with Kia Souls. Discovered online that this was a known issue, and had previously been the focus of a class action lawsuit. Contacted Kia corporate who mandated I take it back to Clay Cooley Kia. Clay Cooley Kia refused to repair it, and Kia Corporate refused to handle further.

NHTSA ID

11722057

Incident

Aug 18, 2025

Unknown...the car goes into limp mode suddenly...my battery was boiling an shot liquid out of it, prior to this my other battery leaked an the alternator was bad ....when this happens suddenly you have no steering, an if course the boiling battery may explode....I've had this car checked over several times since begining of January with everything checking out fine but this still happening

NHTSA ID

11718091

Incident

Feb 14, 2026

Excessive oil consumption

NHTSA ID

11706053

Incident

Nov 20, 2025

Was going down the freeway the check engine light came on pulled over and found there to be no oil on the dip stick and I had just checked it a week ago. Now the engine is knocking due to the oil consumption.

NHTSA ID

11705435

Incident

Dec 16, 2025

Description of the Problem: My 2018 Kia Soul has a recurring and unresolved safety issue involving sudden loss of power while driving. The check-engine light repeatedly comes on, and at times the vehicle will hesitate or lose acceleration unexpectedly, creating a risk of being unable to maintain speed in traffic. Chronology: This issue has been occurring for over a year. I have taken the vehicle to the Kia dealership multiple times for the same problem. Each time, the dealership has either been unable to diagnose the cause or has returned the vehicle stating the issue was repaired, but the problem returns within weeks. Most recently, the dealership kept the vehicle for over a month and still could not identify or resolve the cause of the power loss or the recurring check-engine light. They then instructed me to pick up the car and drive it until the warning light comes back on, despite my reporting that the vehicle loses power while driving and is unsafe to operate. Safety Concern: The loss of power happens without warning and can leave me unable to accelerate or maintain speed. This has made it unsafe to drive in normal traffic conditions, such as merging onto highways or crossing intersections. I cannot safely operate the vehicle in its current condition. Attempts to Resolve: All service has been performed at the same Kia dealership since the car was purchased new. Despite multiple repair visits, including a month-long stay at the dealership, the problem remains unresolved. Kia Customer Care has been contacted, but the issue continues with no effective resolution or repair. Reason for NHTSA Complaint: Because the malfunction involves sudden power loss and repeated failure of the authorized dealership to diagnose or repair the issue, I am reporting this as a potential safety defect. I am concerned that this may reflect a broader problem affecting this vehicle model.

NHTSA ID

11704038

Incident

Oct 6, 2025

9/25/25 Car would not accelerate on exit ramp and engine seized just as I pulled into Romeo Kia Kingston Car Repair Center, causing a dangerous driving situation. No prior noise or warning lights for the 6 years I have owned the car. 10/6/25 per Jared Illg, District Kia Mgr., “Although, my 2018 Kia Soul 2.0 engine is under the Class Action Settlement, my car is not under extended warranty, because I did not have the KSDS software update.” I did not receive any mailings over the years, but two August, 2025 re-notifications. •Kia KSDS software 2018 update (172/953), why wasn't update performed by Romeo Auto Group Dealership before I purchased car? •Kia’s parent company, Hyundai Motor Group removed the KSDS update requirement for its lifetime engine warranty, why hasn’t Kia? •The Romeo Auto Group Dealership owned this car and used it as a Lease Car. I am second owner, why didn't I get a Transferable / Powertrain warranty? •Why would I get a limited warranty knowing the Kia Soul has faulty 2.0 engines since 2012, defects that arise in the car that originate from the factory; resulting in numerous lawsuits and class action settlements. This is not a case of owner neglect; I have taken excellent care of my 2018 Kia Soul. •I did not receive TSB-19 and TSB 222 which refers to known defects of all these connected components: excessive oil consumption, defective piston rings, and rod bearing failure; resulting in catastrophic engine failure. My mechanic has installed a used 53,000 mi. used engine. I now have a debt of $8,817.91 for a 2018 Kia Soul I have owned for six (6) years. I am so stressed this has a disastrous impact on my financial situation. Desired resolution: I am asking for Kia America, Inc. to reimburse me my expenses of $8,817.91 (replacement engine, towing, and car rentals; attached) and provide the extended Warranty for 150,000 mi.

NHTSA ID

11703799

Incident

Sep 25, 2025

Kia is aware of these issues why haven't they issued a recall for engine oil composition low and causing problems

NHTSA ID

11697523

Incident

Oct 30, 2025

On 8/12/25, my 2018 Kia Soul (approx. 126,000 miles) suddenly began shuddering at low RPM with a flashing check engine light, near-stalling, and smoke from the exhaust. A warning message appeared for an engine control issue. Prior to failure, the engine intermittently knocked and displayed an oil pressure warning light. The engine burned oil at an excessive rate between routine oil changes. At the Kia dealership, diagnostic codes P0300 and P0303 were found. The dealer reported a burnt valve and seized starter, estimating $2,960 for valve repair or $6,437 for engine replacement, and stated these were not covered under Kia’s extended warranty or E2 Class Action Settlement because no P1326 code appeared. However, the symptoms match the rod bearing wear defect already covered under the E2 settlement. The dealer refused to perform the bearing clearance test (Kia’s required diagnostic for this defect) without payment, even though the settlement and extended warranty specify Kia must cover all inspection, diagnostic, and repair costs for potential rod bearing failures within the 15-year/150,000-mile coverage period. The engine failure created a serious safety risk when the vehicle lost power and nearly stalled in traffic. The burnt valve and seized starter are likely secondary effects of bearing-related long block failure. Kia’s refusal to inspect the vehicle without charge contradicts the settlement’s intent and prevents proper diagnosis of a known defect. I request that NHTSA investigate Kia’s handling of inspection and warranty coverage for vehicles showing these symptoms but lacking code P1326.

NHTSA ID

11697208

Incident

Aug 12, 2025

Engine is loosing oil into the #2 cylinder, causing an damage to the downstream exhaust. Once the cylinder fills with oil, the care immediately drops in operation speed causing significant driver response and immediately surrounding vehicles

NHTSA ID

11695488

Incident

Oct 24, 2025

Low compression on cylinder 3 and 4 and the car only has 40,000 miles on it. It's not covered in warranty because it's a 2018 model but I've only had the car for 1.5 years and still owe 18,000 on it and I'm a officer and a single mother and can't afford to let the car go back when Kia knows these cars have engine issues and low compression engine problems.

NHTSA ID

11692147

Incident

Oct 1, 2025

Going through oil so fast excessive oil use

NHTSA ID

11687458

Incident

Dec 31, 1969

Out of no where my engine just started knocking. No engine light came on, no oil light came on, no warnings at all. I just got an oil change 12/18/2024, with 2 top offs 04/23/25 and 07/23/25. And August 24 th my engine started knocking. I took it to Midtown kia on 08/25/25 and they told me Kia customer care won't cover the engine recall.

NHTSA ID

11685155

Incident

Aug 24, 2025