2014 Kia Soul vehicle speed control problems

“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…”

“Summary of Safety Defect: While my 16 year old daughter was driving our 2014 Kia Soul in December 2025, the car suddenly lost power in traffic and would not go over 20 mph; the check engine light came on and the vehicle entered limp mode. The sudden drop in power created a high anxiety, hazardous situation for my daughter, who had only had her license for a week, during rush hour traffic. The vehicle was unsafe to operate and had to be towed. Details of the Incident: Diagnostic trouble code P1326 (Knock Sensor Detection System) was confirmed by the Kia dealership. P1326 is part of Kia’s known engine defect population and is tied to safety related engine failures. The dealership documented oil consumption, oil fouled spark plugs, and compression readings below Kia’s minimum specification on all cylinders. The dealership concluded in writing that engine replacement is required. Despite this, Kia denied warranty coverage based solely on a bearing clearance test, without completing the full diagnostic process required under the KSDS settlement. The vehicle remains unsafe and inoperable. Why This Is a Safety Issue: The sudden loss of power and inability to…”

“The contact owns a 2014 Kia Soul. The contact stated that while driving at low speeds, the accelerator pedal was depressed but the vehicle failed to respond. The brake pedal was depressed to the floorboard. The vehicle was slow to respond and failed to move. After the vehicle responded, the vehicle failed to exceed 35 MPH. The check engine warning light was illuminated. The vehicle was taken to the local dealer where it was diagnosed that the heat sensor and protector shield needed to be replaced. The vehicle was repaired but the failure persisted. The manufacturer was contacted but no additional assistance was provided. The failure mileage was approximately 116,119.”

“The contact owns a 2014 Kia Soul. The contact stated while driving 30-40 MPH and depressing the brake pedal, the vehicle accelerated unintendedly. The contact immediately shifted into neutral (N). There was no warning light illuminated. The contact then shifted into drive (D) and the vehicle responded as needed. The contact stated that the failure had been reoccurring intermittently. The vehicle was taken to the dealer several times. The dealer diagnosed that no issues were found; however, the failure persisted. The vehicle was taken back to the dealer. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 41,000.”

“I own a Kia Soul. The catylitic converters went out. The car won't accelerate and the car got extremely hot. When I looked up Kia Soul recalls it showed that there was a recall on the converters also that some Kia Souls had gotten hot an caught on fire. I called Parkway Family Kia. They told me that it wasn't an active recall and that they couldn't do anything. I then called Demontrond Kia and got the same answer. I talked with the service manager Brian. What can I do to resolve this?”

“The engine is the system that is malfunctioned and yes it is available for inspection upon request. The vehicle accelerates at a slower pace than actual acceleration pressure put on pedal and then it lurches/jerks forward at a fast pace and then slows down and repeats that process over and over. Yes the problem has been confirmed. It has been inspected by the dealership. Yes the warning lamps that often illuminate are the check engine light and the oil light. They first appeared to my knowledge on 01/2020. I have been told numerous times by the Kia dealership where I get the vehicle serviced as well as Kia America Inc. Corporate Headquarters, that the engine has a malfunction and needs to be replaced. I attempted to have this problem fixed and I have missed work and spent thousands of dollars for this vehicle to work correctly.”