Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2012 Kia Soul owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2012 Kia Soul. The contact stated that while driving at 55 mph, a abnormal noise and odor appeared from the rear both driver and passenger side of the vehicle. The contact managed to veer to the shoulder of the road, turn the vehicle off, wait for about 15 minutes, attempted to turn the vehicle back on when the noise became louder and the check engine warning illuminated. The vehicle then was towed to an independent mechanic where it was diagnosed that the command rod fractured and went through the engine. The vehicle was not repaired. The vehicle was not drivable. In addition, a visible leak was noticed by the technician. The manufacturer was notified of the failure and informed the contact that no recalls were under the VIN. …
The contact owned a 2012 Kia Soul. The contact stated that while driving approximately 40 mph a loud popping sound originated from the undercarriage on the driver's side. The contact witnessed smoke coming from the engine compartment and veered to the vehicle side of the road and turned the vehicle off. The contact was then notified by pedestrians, that a fire was originating from the engine compartment, and the contact exited the vehicle. The fire was extinguished by the fire department and a report was available. Additionally, the contact stated that the Engine Oil Level and the check engine safety light had been illuminated for three days prior to the failure, and approximately three quarts of oil were added four to five days before the fire. The contact believed that the failure was associated with an unknown recall. The manufacturer was not notified of the failure. …
The contact owns a 2012 Kia Soul. The contact stated that while making a left turn a second vehicle crashed into the passenger side of the vehicle. During the crash no air bags deployed. The driver sustained a minor neck injury which did not require medical treatment. A police report was taken at the scene and the vehicle was towed away. In a second incident, the vehicle crashed down an embankment, and again no airbags had deployed. The driver sustained a minor neck injury that did not require medical treatment. Recently while operating the vehicle the check engine light would remain illuminated. The vehicle was taken to the local dealer who diagnosed that the catalytic converter was faulty and the engine was burning excessive oil and the engine needed to be replaced. The vehicle was not yet repaired. The manufacturer and local dealer were notified of the failure. …
The contact owns a 2012 Kia Soul. The contact stated while driving 55 mph, she saw smoke exiting the rear of the vehicle. The contact stated no warning light was illuminated. The contact was able to park on the side of the road and after exiting the vehicle, she saw a fire that started under the vehicle. The fire department was able to extinguish the fire. The contact was unaware if a fire report was filed. The contact stated no one was injured or sought medical attention. The vehicle was not drivable. The vehicle was towed to her sister's residence. The vehicle was not diagnosed or repaired. A dealer was not contacted. The manufacturer had not been informed of the failure. The failure mileage was approximately 186,000.
The contact owns a 2012 Kia Soul. The contact stated that while driving at approximately 5 MPH the braking system suddenly activated causing the vehicle to abruptly stop. Smoke was then seen coming from under the front end of the vehicle. After the contact exited the vehicle flames and smoke began to engulf the vehicle. The fire department was called to the scene and extinguished the flames. The vehicle was later towed to the home. The extent of the damage to the vehicle and the cause of the failure was not yet determined. The local dealer and manufacturer were notified of the failure. The failure mileage was 190,000.
The contact owns a 2012 Kia Soul. The contact received notification of NHTSA Campaign Number: 19V120000 (Engine, Engine and Engine Cooling). The contact stated while driving approximately 65 MPH the vehicle started losing motive power. The contact stated that the check engine warning light was flashing. The contact depressed the accelerator pedal; however, the vehicle continued losing motive power. The contact stated that the engine did not rev while depressing the accelerator pedal. The contact pulled off the highway and the vehicle stalled. The contact stated that he restarted the vehicle however, while attempting to shift into drive(D), the vehicle failed to respond as needed. The contact had the vehicle towed to the dealer. …
The contact owns a 2012 Kia Soul. The contact stated while at a complete stop, the vehicle stalled. The contact stated that the failure also occurred while slowing down with the brake pedal depressed. The contact was able to restart the vehicle. The contact stated that the vehicle was experiencing unintended downshifts. Additionally, the vehicle hesitated to respond and was sluggish while driving and depressing the accelerator pedal. The local dealer was notified of the failure and informed the contact a diagnostic test needed to be performed and the repairs would be out-of-pocket. The vehicle was not diagnosed or repaired. The check engine, the electronic parking brake warning light, and several unknown warning lights were illuminated. …
The contact owns a 2012 Kia Soul. The contact received notification of NHTSA Campaign Number: 23V652000 (SERVICE BRAKES, HYDRAULIC); however, the dealer informed the contact that the vehicle was no longer under the Extended Warranty. The manufacturer sent the contact the information for a Class Action Lawsuit. The contact stated while driving at various speeds, the vehicle stalled. There were no warning lights illuminated. The contact drove the vehicle to empty and refilled with premium gasoline. The contact stated that while driving on the highway at an undisclosed speed, the vehicle failed to respond as needed. The contact pulled over to the side of the road. The contact was informed that the engine had thrown a rod. The vehicle was towed to an independent mechanic and the contact was informed of the recall. …
The contact's daughter owns a 2012 Kia Soul. The contact stated while her daughter was driving at an unknown speed, the check engine warning light illuminated, and the vehicle started making abnormal sounds before stalling. The vehicle was not drivable. The owner and a friend pushed the vehicle a short distance to the friend's residence. The contact stated an independent mechanic arrived at the location of the vehicle but was unable to determine the cause of the failure. The independent mechanic informed the contact that the vehicle failure was associated with NHTSA Campaign Number: 19V120000 (Engine, Engine and Engine Cooling). The contact spoke to the manufacturer and made them aware of the failure and was informed that the VIN was included in the recall. …
The contact owns a 2012 Kia Soul. The contact stated while driving 45 MPH, the check engine warning light illuminated. The contact retrieved DTC code: P0420 (Low catalyst system efficiency) using a handheld diagnostic tool and drove the vehicle to a local dealer, where it was diagnosed and determined that the spark plugs needed to be replaced. The contact reported that he informed the dealer that DTC code: P0420 (Low catalyst system efficiency) was related to the catalytic convertor. The dealer advised that they would replace the catalytic convertor if he paid for the spark plug replacement. The vehicle had not been repaired. The contact researched online and related the failure to NHTSA Campaign Number: 19V120000 (Engine, Engine and Engine Cooling). The manufacturer had been informed of the failure. The failure mileage was 140,951. …
Related recalls
Engine
Kia Motors America (Kia) is recalling certain 2012-2016 Kia Soul vehicles equipped with 1.6L Gasoline Direct Injection (GDI) engines. High exhaust gas temperatures may damage the catalytic converter, possibly resulting in abnormal engine combustion and damage to one or more of the engine's pistons and possible piston connecting…
Remedy: Kia will notify owners, and dealers will upgrade the Catalytic Overheating Protection Engine Control Unit logic to prevent overheating of the catalytic converter.
NHTSA investigations
Engine Fires
On March 29, 2019, the Office of Defects Investigation (ODI) opened two Preliminary Evaluations (PE19-003 on Hyundai and PE19-004 on Kia) to broadly investigate incidents of non-crash fires (regardless of origin or operational status of the vehicle) on various model year Hyundai and Kia vehicles.
Loss of Motive Power
The National Highway Traffic Safety Administration (NHTSA) received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles spanning Model Years (MY) 2005-2021.
Engine complaints in other Soul years
Frequently asked questions
How common are engine problems on the 2012 Kia Soul?
NHTSA has 220 complaints about the engine & cooling of the 2012 Kia Soul, 43% of the model year's 514 complaints. The component named most often is exhaust system › emission control › catalytic convertor (5 mentions).
Is there a recall for 2012 Kia Soul engine problems?
Yes — NHTSA recall 19V-120 (engine, Feb 22, 2019). Recall repairs are free at authorized dealers.
At what mileage do 2012 Kia Soul engine problems start?
Half of the complaints with a recorded mileage happened before about 120,000 miles, and 9% before 25,000 miles.
Is it dangerous?
Owners linked 2 crashes, 18 fires and 5 injuries to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.