2023 Kia Sportage Hybrid engine problems

“My 2023 Kia Sportage EX Hybrid has experienced repeated engine-related failures since October 2022, requiring multiple dealer repairs. The safety issue escalated in 2026 when the vehicle experienced sudden loss of acceleration while driving on highways. In April/May 2026, the vehicle lost acceleration twice within approximately 10–15 minutes. Warning messages appeared, including Check Engine Light and "Check Hybrid System – Stop Safely." The accelerator became unresponsive, requiring the vehicle to be moved to the shoulder. The dealer diagnosed P0030 and P1120 and replaced the Bank 1 Sensor 1 oxygen sensor and valve cover assembly with manufacturer technical support involved. Several months later, another highway loss-of-acceleration event occurred. The vehicle would not respond to the accelerator, RPM remained around 1,000, and it had to be safely moved off the road. The dealer diagnosed P2138 and replaced the accelerator pedal assembly. The repeated unexpected loss of acceleration creates a serious safety risk. The root cause remains unknown despite multiple repairs.”

“The contact owns a 2023 Kia Sportage. The contact stated that while driving at an undisclosed speed, there was smoke coming from the engine compartment and the vehicle stalled. The check engine and battery warning lights were illuminated. The vehicle was towed to a dealer to be diagnosed; however, the diagnostic result was unknown. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 104,000.”

“The contact owns a 2023 Kia Sportage. The contact stated that while driving 75 MPH, the engine seized. The hybrid engine message was displayed. The vehicle was driven to the shoulder of the road and parked. The contact stated that while attempting to restart the vehicle, the vehicle started. The contact reset the instrument cluster. The contact stated that the failure had occurred while driving on a busy four-lane highway. The failure was a persistent failure. The dealer was made aware of the failure. The vehicle was taken to the dealer. The contact stated that no diagnostic information was provided. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact stated that the vehicle had experienced an EVAP leak in April 2026. The vehicle was at the dealer for two months and was repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 45,445.”

“On XXX and XXX, while driving on the highway, the vehicle suffered a sudden, complete loss of motive power. Flashing warning lights appeared on the instrument cluster, accompanied by a safety warning message instructing the driver to pull over and "Check Hybrid System" immediately. This sudden, uncommanded drop in propulsion on active, high-speed roadways created an immediate safety hazard, forcing emergency maneuvering to coast the vehicle safely to the shoulder. The vehicle was delivered to an authorized franchise dealer (Arapahoe Kia in [XXX]) on XXX, where it has now remained grounded for 31 consecutive days. The service department has verbally communicated extreme diagnostic confusion, stating they lack an on-site hybrid specialist to properly diagnose the high-voltage powertrain/HPV/hybrid battery system. The vehicle has historically received software updates under Campaign SC335A, and the symptoms reported here closely align with the loss of motive power issues addressed in Voluntary Emissions Service Campaign SC338. To date, neither the dealership nor the manufacturer (under Case #XXX) has provided a formal written diagnosis, a repair schedule, or an active resolution.”

“When driving on the highway, warning lights activated on the dash with the message "Check Hybrid System. Stop Safely." Seconds later, the vehicle lost all propulsion power. The hybrid battery indicated it had a half charge and the combustion engine was running. Depressing the accelerator caused the engine to increase RPMs but little to no power was output to the wheels. I turned the car off and all electrical systems were disconnected and the car would not start. I pressed the "12V Battery Reset" button and electrical systems were restored and I was able to start the car. The failure then repeatedly occurred. This issue has presented multiple times now, all while driving on the highway.”

“I would welcome making my vehicle available for inspection on this issue. Year/Make/Model: 2023 Kia Sportage EX HEV AWD 4-Door SUV Color: Black Powertrain: Hybrid Electric Vehicle (HEV) Number of occupants: 2 (driver and passenger) Injuries: None, but fatalities could have occurred. Vehicle turned off completely – no power, no hazard lights, and although driver miraculously made it to the shoulder, most of it was blocked by a snowbank and sat in a dead car with no hazard lights. Passenger (recovering from leg surgery in full leg brace) was forced to exit onto a snow bank and enter a tow truck cab, risking re-injury. Crash: No — vehicle was somehow brought to shoulder and aid protected by two state trooper vehicles until a tow arrived. Our car suddenly emitted a loud alarm at highway speed on I-84 -the instrument panel displayed an "stop vehicle immediately" warning. There was no prior warning, unusual noise, or dashboard indication of any problem. The car shut completely down while still on the highway. Car was towed to the nearest KIA dealer - Columbia Ford/Kia [XXX] ). After diagnosis, the authorized Kia dealer documented the following on Repair Order Invoice…”