Kia Soul hesitation problems

Filed May 4, 2026 · Electrical, Engine · DC

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.

Filed Feb 7, 2026 · Transmission · GA

I paid almost 3,500 dollars and Kia kept my car two months and I’m still having transmission issues and now they are asking for service receipts. After I picked up my vehicle from the original transmission repair I was back in less than 7 days because transmission was roughly jumping in gear and shifting horribly with burning smell. The technician noticed the problem and immediately took my car to the back but they kept my car another 30 days saying that they did an update and now I’m stuck suffering with a struggling transmission. My mpg has drastically dropped on this vehicle to a 9.6 and that is not normal. I paid cash and Kia need to help me in any way. They are trying to wait until the 12,000 mile warranty runs out and leave me stuck and that’s not fair when I’ve been complaining since I picked up the car the second time but they won’t assist me now. My Vehicle experiences delayed transmission engagement, RPM increases without acceleration, hesitation, and loss of fuel economy. Dealer refuses diagnosis unless complete failure occurs. This creates unpredictable vehicle response and loss of power concerns. Transmission hard shifts and jerks violently during gear changes and acceleration, causing loss of smooth power delivery and unsafe vehicle behavior.

Filed Jan 13, 2026 · Electrical, Engine · SC

The engine warning light illuminated and the vehicle began to hesitate and lose power while driving, making the vehicle unsafe to operate. The problem involves the engine and powertrain. A Kia dealer inspected the vehicle and found a timing-related engine fault code (P0014). The dealer stated the condition is consistent with the Kia engine bearing failure recall and referenced recall SC200PS, but said this VIN was not included. The vehicle has reduced power and cannot be safely driven. This creates a safety risk because the engine can lose power without warning while the vehicle is in motion. Warning lights were present before and during the failure. The vehicle has not been repaired and is available for inspection.

Filed Dec 9, 2025 · Engine, Transmission · DC

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 the federal safety agency 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.

Filed Nov 5, 2025 · Engine · 89,600 miles · GA

The contact owns a 2015 Kia Soul. The contact stated that while the vehicle was idling or accelerating, the vehicle started shaking at the front end near the engine. The vehicle hesitated while accelerating. The check engine warning light was illuminated. The contact received notification of the federal safety agency Campaign Number: 20V750000 (Engine), and the vehicle was towed to the dealer. The software update was performed; however, the failure persisted. The dealer informed the contact of DTC: P70300, which should have been resolved with the recall repair, which allowed the vehicle to pass the inspection as a successful repair; however, the failure persisted. The vehicle had not received any additional repairs. The contact found information on TSB: ENG222, the federal safety agency ID Number: 11014912 (Engine), which was related to the failure. The manufacturer was informed of the failure, then opened a case and informed the contact that no additional assistance would be provided. The failure mileage was approximately 89,600.

Filed Oct 26, 2025 · Steering · IN

I have self diagnosed the problem thus far. The issue is with a severe hesitation in the steering wheel..it started 3 days ago and is getting worse. I feel as though I will lose complete control of my vehicle at any time. I am scared to death to drive my car. I will contact my dealership in the morning for a professional diagnosis. Praying this is covered by extended warranty as I have no money for an expensive repair. My dealership is 25 miles away and I'm terrified to drive it that far..if the steering fails, it will be a complete catastrophe.

Filed Oct 16, 2025 · Engine, Transmission · 80,000 miles · TX

The contact owns a 2020 Kia Soul. The contact stated that the vehicle had shut off on several occasions while driving in traffic or while stopped at a stoplight. The contact stated that while the air conditioning was activated, the engine made an abnormally loud thumping sound before the vehicle shut off. The contact was able to restart the vehicle after shifting to park; however, the vehicle hesitated after restarting. The contact activated the hazard lights while the vehicle was off in traffic. The contact stated that there were no visible leaks, and no warning lights were illuminated during the failure. The message "Shift to Park and Restart Engine" was displayed and flashing. Upon investigation, the contact discovered that the failure might be related to the federal safety agency Campaign Number: 21V259000 (Engine). The contact sought assistance from an independent mechanic, who was unable to assist. The local dealer was called, but the contact received no answer. The vehicle was not diagnosed or repaired. The manufacturer was not contacted regarding the failure. The failure mileage was approximately 80,000.

Filed Sep 30, 2025 · Engine · 111,157 miles · NC

The contact owns a 2016 Kia Soul. The contact stated that while driving at an undisclosed speed, the vehicle failed to accelerate as intended while depressing the accelerator pedal. No warning lights were illuminated. In addition, the vehicle hesitated while driving. The vehicle was taken to the dealer, where it was diagnosed with catalytic converter failure. The contact was informed that the catalytic converter needed to be replaced. The vehicle was not repaired due to the cost. The failure recurred, and the contact parked the vehicle. The vehicle was no longer being driven due to safety concerns. The manufacturer was notified of the failure. The failure mileage was 111,157.

Filed Sep 29, 2025 · Engine, Fuel system · FL

P0420 code indicated during emissions test. Vehicle shut off after stopping and acceleration after stopping. Hesitates when trying to restart Vehicle. Contact kia manufacturer about engine and P0420 code, however no help was given.

Filed Sep 15, 2025 · Body · OH

I was driving on the highway when I heard a whistle. When I arrived at my destination, I was surprised to see that the front driver’s side windshield trim panel was missing and flew off when I was driving. Earlier, I had a similar issue with the front passenger side trim panel. I reported these safety concerns to Kia on 9/2. I received a standard form letter on 9/4 (copied below). I was surprised by Kia’s response because I think parts flying off during typical driving use is more than standard repair and is a safety concern for all of us who travel on our roads. I’m reporting to you because I care about safety as both a driver and a passenger. I attached the photos I took and sent to Kia. —- Thank you for contacting Kia Customer Care. We’re sorry to hear about the concern with your Kia. The standard Limited Basic Warranty for your vehicle has expired (5 years/60,000 miles whichever comes first.). As such, any repairs recommended outside of warranty coverage, or not included in an applicable campaign, would be the responsibility of the vehicle’s owner. If you have any additional questions or need further assistance, please don’t hesitate to call us at 800‑333‑4542 (option 2, then 5) and provide your case number. Sincerely, Kia America