424 of the
7,523 complaints filed about the KIA Soul
are about the transmission —
6% of everything owners reported.
The worst model year for it is 2020.
424
Complaints
6%
Share of all complaints
9
Crashes
19
Fires
Transmission & Drivetrain complaints by model year
I purchased a used 2025 Kia Soul with approximately 12,930 miles on the odometer in July 2026. Prior to Friday, August 1, 2026, I had not experienced any warning lights, warning messages, drivability issues, or other symptoms. The vehicle appeared to operate normally. On August 1, 2026, as I pulled out of the parking lot, the car surged or lurched forward while pushing on the gas. I pulled over, and the engine RPM still would increase on its own while the vehicle was in park, and and while stopped with the brake pedal applied. On one occasion in traffic a week before, the vehicle stalled unexpectedly. At the time I thought I did something wrong and didn't initially think it was a defect. This has created a safety concern because the vehicle appears to accelerate or push forward without me doing anything. The condition raised concerns about maintaining control of the vehicle in traffic and while stopped behind other vehicles. The vehicle was inspected by a Kia dealership. I was informed that a technician performed a road test and was able to reproduce the concern I reported. The dealership initially identified contaminated A/C refrigerant and recommended evacuation and recharge of the A/C system. After further diagnosis, I was informed that the A/C compressor may have internal damage and may require replacement. The root cause of the unexpected revving, stalling, and lurching has not been conclusively determined. I have received conflicting information regarding whether the A/C system is responsible for the condition and whether the vehicle is safe to drive. The vehicle is available for inspection upon request. Kia Customer Care reviewed the situation and recommended that the vehicle be evaluated by a different Kia dealership for a second opinion. No police report or insurance investigation has been conducted regarding this issue. Someone advised me to file this report, saying that an AC compressor can't make a car engine lurch.
NHTSA complaint #11755282 — an unverified report by a vehicle owner.
The contact owns a 2020 Kia Soul. The contact stated that while driving at an undisclosed speed, the vehicle stalled without warning while releasing the accelerator pedal. The vehicle restarted after each failure. The first dealer diagnosed the vehicle and retrieved DTC: P04100 (Camshaft Position Sensor A Circuit); however, the repair failed to fix the vehicle. The vehicle was taken to Hendrick Kia of Concord (7550 Hendrick Auto Plaza NW, Concord, NC 28027); and the technicians informed the contact that the vehicle was not properly repaired. The vehicle was returned to the first dealer, and the dealer failed to duplicate the failure. The dealer dismissed the contact’s concern that the vehicle was consuming an excessive amount of engine oil. The contact was informed that adding one quart of oil per 1,000 miles was within normal operation of the vehicle. Upon investigation, the contact related the failure to Kia recall SC199. The manufacturer was notified of the failure and provided a case number and referred the contact to the NHTSA Hotline to report the failure. The vehicle was not repaired. The failure mileage was approximately 34,000.
NHTSA complaint #11751776 — an unverified report by a vehicle owner.
The engine has structural manufacturer defect causing extreme internal engine oil consumption with zero external leaks, creating a severe risk of sudden oil starvation catastrophic mechanical engine failure. The severe oil consumption problem was confirmed by a certified national corporate service center (Firestone Auto Care). An intermittent P0420 catalytic converter warning is actively appearing on the dashboard, which is a documented consequence of internal engine oil burning. When attempting to get this mechanical defect diagnosed and repaired under the class-action parameters, manufacturer dealerships (Findlay Kia and Jim Marsh Kia) declined to schedule the mandatory manufacturer diagnostic testing, preventing a known vehicle defect from being resolved.
NHTSA complaint #11750111 — an unverified report by a vehicle owner.
While driving on the interstate at approximately 70 MPH, the vehicle suffered a sudden and complete loss of forward motive power. The engine revved, but the vehicle completely ceased forward acceleration and could not maintain highway speeds. This created an immediate safety hazard, forcing me to navigate across active lanes of highway traffic without power to reach the shoulder, narrowly avoiding a rear-end collision. Once stopped, the vehicle completely refused to engage any forward gears (Drive). However, the transmission will still engage and move backward in Reverse. This is the second time this vehicle has experienced a total transmission failure in 6 years, despite having previously had the transmission replaced at an authorized dealership under Kia Service Campaign SC199. The replacement Intelligent Variable Transmission (IVT) component has suffered an identical, catastrophic mechanical failure to the first unit. The manufacturer’s previous campaign remedy failed to permanently resolve this severe highway safety defect.
NHTSA complaint #11747549 — an unverified report by a vehicle owner.
I am filing this complaint regarding my 2021 Kia Soul due to repeated engine and powertrain failures and concerns about the quality and safety of the repairs. While my vehicle was under Kia's 100,000-mile powertrain warranty, I repeatedly brought it to the dealership for excessive oil consumption and transmission problems. Despite multiple visits, the dealership performed minor repairs or claimed they could not identify the transmission issue. I also contacted Kia Consumer Affairs but received no assistance. Shortly after my warranty expired, Kia determined both the engine and transmission required replacement. The repairs were completed as a "good faith" repair rather than a warranty or recall repair, using remanufactured components. Since then, I have continued experiencing problems. The replacement engine appears to have been installed improperly, including stripped motor mount bolts/pins and a missing bracket. Within months, I also developed radiator and coolant reservoir problems, raising additional safety concerns. I understand Kia has issued recalls and service campaigns involving similar engine and powertrain defects. When I previously checked my VIN, I recall it showing an engine-related recall. However, a recent search showed no open recalls. Regardless, my vehicle experienced the same failures and required replacement of both the engine and transmission after I repeatedly sought repairs while still under warranty. I believe these repeated failures and the apparent improper installation of the replacement engine warrant investigation. I have repair records documenting my complaints, the repairs, and the continuing issues.
NHTSA complaint #11747277 — an unverified report by a vehicle owner.
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.
The contact owns a 2018 Kia Soul. The contact stated that while driving at 45 MPH, the vehicle stalled and jerked while accelerating and experienced severe jerking while decelerating. The failure had occurred on several occasions. On June 18, 2024, the vehicle failed to accelerate or shift properly. On January 15, 2025, the vehicle shuddered violently and nearly stalled. On April 14, 2026, the vehicle was jerking, and the transmission shifted gears improperly. The vehicle was taken to a dealer, and observed that the vehicle was consuming oil excessively. The dealer replaced the spark plugs and performed an induction cleaning and transmission valve service. The dealer was unable to duplicate the failure after a 36-mile test drive, after the service. From May 27 to May 29, 2026, the vehicle failed to start and was towed to the dealer again, where a new short-block engine assembly was installed. On June 2, 2026, a technician discovered that there was no oil in the engine, resulting in a critical crankshaft failure code. Despite the short block replacement and oil correction, the powertrain failures persisted, and the vehicle failed to exceed 50 MPH. The vehicle violently stalled and jerked while accelerating and decelerating, creating a safety hazard. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 92,573.
NHTSA complaint #11746010 — an unverified report by a vehicle owner.
The vehicle is a 2015 Kia Soul with the 1.6L GDI engine. The check engine light came on solid, and a dealer later confirmed diagnostic trouble code P0420, indicating the catalyst system efficiency is below threshold on bank 1. The catalytic converter and engine are still on the vehicle and available for inspection upon request. This condition matches the defect described in Kia’s SC176 safety recall for 2012–2016 Soul vehicles with the 1.6L GDI engine, in which overheating of the catalytic converter can lead to internal engine damage and even a fire. My concern is that a failing catalytic converter or related engine damage could lead to sudden loss of power, engine failure, or fire while driving, which puts my safety and the safety of others at risk. The problem has been confirmed by an authorized Kia dealer, which documented the solid check engine light and DTC P0420 on a written repair estimate. In that document, the dealer referenced recall SC176Y as the possible applicable recall and noted that it would need to contact Kia for coverage because the vehicle has a branded rebuilt title. To my knowledge, the manufacturer has not yet performed any SC176‑style ECU logic update, compression test, or catalytic converter/engine inspection on this vehicle, and the manufacturer has declined to escalate or review recall coverage for this defect. The check engine light and P0420 code remain the primary warning indicators, and they first appeared shortly before the dealer visit on the repair estimate date.
NHTSA complaint #11744129 — an unverified report by a vehicle owner.
• a theft attempt caused by the widely reported Kia software vulnerability (documented in my police report) • a display failure that Kia refused to repair • a recall that Kia refused to perform because the display was broken • repeated defects lighting, battery warning indicators never come on when the oil is beinf consumed • and now a complete engine failure on a 2022 vehicle
NHTSA complaint #11743951 — an unverified report by a vehicle owner.
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 complaint #11741736 — an unverified report by a vehicle owner.
COMPONENT FAILURE: The engine, power train, and speed control systems failed due to the known Nu 2.0L GDI connecting rod bearing defect. SAFETY RISK: My [XXX] daughter was driving in heavy rush-hour traffic when the vehicle suddenly lost motive power and entered a 20 MPH "limp mode." This sudden deceleration created an immediate and severe risk of a rear-end collision, endangering my daughter and surrounding motorists. DEALER CONFIRMATION: The failure was officially confirmed by Flow Kia of Charlottesville (RO #XXX). On Dec 3, 2025, the dealer confirmed active DTC P1326 (KSDS) and documented failed cylinder compression (as low as 150 PSI; min spec is 178 PSI). The dealer issued a written diagnosis stating: "engine replacement is required." MANUFACTURER CONDUCT: Despite their own dealer's written diagnosis and the active P1326 safety code, Kia Corporate issued a bad-faith warranty denial. The dealer also unlawfully charged me $165 for the mandatory KSDS warranty diagnostics. SUMMARY: This is a textbook safety failure under NHTSA Investigation EA 21-003. Kia's refusal to replace the engine under the court-supervised Engine Litigation II settlement represents a systemic failure by the manufacturer to remedy a known safety hazard. 51-page evidence packet attached. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11740615 — an unverified report by a vehicle owner.
On the highway, not reaching speed at expected RPM, try increasing power and RPM stops climbing at 3500, and speed decreases suddenly, car starts bucking, check engine light flashing. I pull over, stop, and keep going after several minutes idling with no apparent issue continuing. I take the car to get a computer check of the engine light code, P0420 for catalytic converter efficiency. Take car to dealer, they diagnose the converter as being both melted and clogged, quote me $4200 to replace with OEM part. Go to get second opinion at another service center, they confirm converter diagnosis and additionally diagnose cause as relating to outdated ECU software causing converter overheating, something which was an active recall for Kia Soul vehicles from MY 2012-2016, but only the 1.6L models. My vehicle is a 2.0L model with the exact same issue causing the exact same result, but with no recall, the converter is shot and there is no accountability for replacing the damaged part and updating the faulty software, as well as for missing this faulty software in the first diagnostic.
NHTSA complaint #11739274 — an unverified report by a vehicle owner.
2017 KIA SOUL, at approximately 87,000 miles began to show intermittent oil warning lights under regular G-loads pointing to oil starvation issues.Vehicle was taken to KIA Dealer for oil change. Dealer stated that possible oil consumption would trigger a need to return to dealer before the 1000 mile marker for second round of warranty checks per TSB 222 rev 8 Excessive Oil Consumption Nu/GAMMA/theta/kappa engines. Dealer is claiming that PN Oil Pressure Switch 94750 37100 is culprit and wanting to charge for service and parts. Existing TSB 237, Oil Pressure Switch Replacement, which outlines that the lambda engines have this exact same PN covered under warranty at no cost to client. This should set precedent that the TSB needs to include the same engine types in TSB 222 as the issue seems to be recurrent in engine types across the fleet of KIA manufactured vehicles. KIA corporate has a letter outlining that the repairs are to be covered by dealers for the Oil Pressure Switch in question.
NHTSA complaint #11737896 — an unverified report by a vehicle owner.
took to kia of jackson for recall sc209a they said they would not do recall because i was a dealer ,called customer service and they said do to the fact that i was a dealer it would not be covered kia of jackson [XXX] kia customer service case [XXX] [XXX] [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11734070 — an unverified report by a vehicle owner.
Engine shut off while making a turn. Took car to mechanic and he stated that the car did not display any error messages. The car also over heated while driving in freeway.
NHTSA complaint #11732298 — an unverified report by a vehicle owner.
The car rpm fluctuated from 1000 to 5000 rpm while in cruise control going 65 mph. At a stop, thr transmission took 30 seconds to engage to low speed. The car was stuttering and bucking at 10mph to 45mph
NHTSA complaint #11732120 — an unverified report by a vehicle owner.
The contact owns a 2021 Kia Soul. The contact stated that while driving approximately 80 MPH, the vehicle unexpectedly stalled, with the check engine warning light illuminated. The vehicle was restarted; however, the failure reoccurred. The contact stated that while driving uphill, the vehicle failed to accelerate as needed. The vehicle was taken to the dealer, where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and case was opened. The approximate failure mileage was 41,000. The VIN was not available.
NHTSA complaint #11730033 — an unverified report by a vehicle owner.
Mi carro hay veces que prende la luz de la engine, lo lleve a checar y salió en la computadora que era un problema de Power Train system, que era secondary DTCs P1C28 Y P1C28000, lo busque en Google y salía que era un problema muy recurrente en Kias souls y sorentos. Que podría causar incendios
NHTSA complaint #11730043 — an unverified report by a vehicle owner.