Kia Soul start-stop problems

Filed Sep 11, 2026 · Acceleration, Engine · NC

This car was purchased in December of 2025 with 26K miles on it. There are stall issues when using the auto start stop feature. I had to power down the car and restart it up to get the car to move. It also will throw the check engine light code and then after you drive it, it goes away which makes it difficult to take to a service shop for diagnosis. Recently the car is now at 28K (9 mo later) and it has an intermittent stutter when driving; I can only describe it as a push/pull motion and its random, during this time the check engine light came on again. On my way to take it to a service station for diagnosis, it went away. Not sure if this has been reported by other 2020 Kia Soul owners.

Filed Nov 10, 2025 · Electrical, Engine · OH

Auto Start Stop Issue - Vehicle will stall and not start when waiting at a red light after you let go of break. All warning lights would turn on and stall.

Filed Sep 25, 2025 · Acceleration, Driver assistance · 33,000 miles · TX

The contact owns a 2023 Kia Soul. The contact stated that the battery discharge and Auto START/STOP warning lights were illuminated. The vehicle was included in the federal safety agency Campaign Number: 23V531000 (Power Train), for which the dealer replaced the electric oil pump controller as the remedy. After the repair, the cruise control was unintendedly activated. The Lane Keep Assist feature was intermittently activated independently. While refueling, the fuel gauge was half full and took approximately 30-40 minutes before quickly displaying a full tank. The dealer was contacted and confirmed that the recall repair was completed; however, the vehicle was not taken back to the dealer to be diagnosed or repaired. The manufacturer was informed of the failure and referred the contact back to the dealer. The failure mileage was approximately 33,000.

Filed Aug 19, 2025 · Engine · WV

Engine stalls with white smoke with auto start stop on

Filed Mar 10, 2025 · Engine · 141,000 miles · TX

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 the federal safety agency 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.

Filed Jun 3, 2023 · TN

The auto start-stop function sometimes will not restart. This time it happened in the middle of traffic at an intersection, and I had to put the car in park and restart it before I could move. This could cause a collision in busy traffic times or if people are not paying attention. The problem has not been confirmed by a dealer at this time. During the time it shut off, the battery light and oil light came on, but I just had the car serviced three weeks ago and was told it passed their inspection (I only go to my manufacturer's dealership for service). The oil light and battery light shut off and did not reappear again after restarting the car. The vehicle can be available for inspection depending on time and date. This happened once before about a year ago, but the dealership said nothing was wrong with the vehicle.

Filed May 17, 2023 · Electrical, Engine · 4,000 miles · NY

The contact owns a 2022 Kia Soul. The contact stated that while at a complete stop, the vehicle lost motive power. No warning light was illuminated. The contact shifted to park(P) and turned off the vehicle to correct the failure. The contact related the failure to the STOP/START feature. The vehicle was taken to the dealer; however, no failure was found. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 4,000.

Filed Jan 7, 2023 · Engine · FL

On 12/28 at approximately 5:00 pm my vehicle shut off 2 times within a span of 30 minutes while I was driving it. It happened on approach to a highway. It was NOT the Stop-Start System. My car was moving while it happened. My car lost all power, and every warning indicator flashed in my dash and I even lost my power steering. I took my car to KIA and they categorized this as my car “stalling”, but I wouldn’t say that is accurate. My car’s computer seems to have malfunctioned or was hacked. Indeed KIA’s repair document shows that they performed a software update on my car to solve this. My car’s engine was certainly malfunctioning while driving on 12/28 after both events of losing all power to my car. It sounded like my engine was in the wrong gear after these events. I didn’t drive my car after that episode and KIA refused to tell me what was wrong after they “repaired it” and performed a software update. This article yesterday about KIA/other auto’s breached is unnerving. I don’t feel safe driving the car and wish I had the ability to cut off KIA’s API to my car while driving. They should only be allowed to perform software updates or access the car’s computer remotely while the car is stationary and the driver should be alerted that KIA or a third party is accessing the car’s computer and/or engine, etc. I just want to make sure if I get in a serious accident that this is on record. https://www.cyberscoop.com/car-hackers-vulnerabilities-research/

Filed Jun 12, 2021 · FL

When pulling out into traffic the car started to go, RPMs spiked all the way and the car just died… I shut it off, and all was fine…. Then I stopped to get gas, and when the auto stop/start kicked in, the car didn’t restart… the oil pressure light turned on, battery light, and check engine light all at the same time. Would not let me shift into park. I had to push the shift release to let me put it into park. I was then able to shut off the car properly and start it just fine, and no lights active. This all happened around 19,000 miles. The last 2 times I’ve been in for an oil change, there has been 2 recalls completed , and now this new recall related to the oil piston.

Filed Jun 4, 2021 · Electrical · VA

Recently I noticed when I stop and the stop-start system feature and the Blind-spot sensors are turned on the car will either shut completely off or stall once I step on the gas.