2023 Kia Sportage Hybrid transmission problems

Filed Aug 4, 2026 · Engine, Fuel system · MA

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.

Filed Jul 16, 2026 · Electrical, Engine · CO

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. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 4, 2026 · Transmission · PA

The car's transmission became unresponsive and caused the car to lose the ability to accelerate. This happened twice on the highway before I could get it to the dealer. In order to recover, I had to pull over on the shoulder and turn the car off, wait, and turn it back on. The dealer, through the Kia warranty service, would only 'recalibrate' the transmission and refused to service it. After the recalibration, the dealership wanted to give me back the car. I insisted that they took it for an extended test drive in which it stalled for them as well. Kia warranty then authorized the replacement, and I am awaiting its completion.

Filed Apr 18, 2026 · Engine, Transmission · PA

The AC compressor failed on my 2023 Kia Sportage Hybrid after 2 1/2 years of service and 59,800, mostly highway, miles. This affected the vehicle's drivetrain and it ground to a halt many times with a message "Check Hybrid System" displayed on the dashboard. The problem occured randomly and initially every few minutes when the vehicle was stopped at traffic lights, creating a real danger of being rear-ended by other cars.

Filed Feb 19, 2026 · Acceleration, Electrical · NY

3 times in the last two days, and dozens of times over the last six months, while driving or while idling, the "check hybrid system" warning has flashed. When it happens the car does into limp mode, where it will go no faster than 13mph. this has happened in the left lane of a highway where there is no where to pull over except the lane, since there is no time to get over before the vehicle shuts down. the car essentially will shut down in the middle of driving, no matter where it is. Especially with my kids in the car it is terrifying hazard. I have brought the car to the Kia service and since its not easily reproducible they have not been able to help and have offered no solutions.

Filed Jan 26, 2026 · Acceleration, Engine · OR

The vehicle frequently fails to engage gas engine when depressing gas pedal to any degree. A full push of the gas pedal does not result in gas engine engagement. This has happened over 15 ties since the recall computer update last summer (2025). This creates extreme danger because the operator expects the full power of the engine to engage when pulling out of intersections or crossing oncoming traffic, but the engine does not engage causing a slow, creeping acceleration from the electric motor only. I took it into the Kia dealer and they found nothing wrong. No warning lights occur when the malfunction happens. And no check engine lights occur either. The only correction is to fully turn the vehicle off and back on. Doing that resets everything back to normal. This malfunction usually occurs within the first 25-30 minutes of vehicle operation.

Filed Jan 11, 2026 · Electrical, Engine · IN

Ev battery system threw up back back to earnings and codes of overcharge and then all lights on dash came on started beeping and then dash went red saying check hybrid system , hybrid system failure stop vehicle. Engine wouldn’t kick back on. I had literally just left my local Kia for a routine checkup and there report is nothing is wrong. Even tho I’ve called them now a few times about it shaking and idling super hard and going limp very often. Towed back to Kia and they have now had it for 4 days and still no results.

Filed Oct 13, 2025 · Electrical, Fuel system · IN

Fails to move when going from stopped to apply gas and moving forward there is a large delay and weak power. Shakes when idles and is really forcful switching from gas to battery or battery to gas,

Filed Oct 1, 2025 · Acceleration, Electrical · FL

February 2024 (27,813 mi): Vehicle lost acceleration while driving, would not transition from EV to engine mode, entered limp mode. Dealer replaced high-pressure fuel pump under warranty after consulting Kia Tech Line (case #[XXX]). September 2025 (58,000 mi): Vehicle will not start without manually resetting 12v battery module integrated in hybrid battery system. Pattern suggests hybrid control system defects, not resolved by previous repair. Car has now been with dealer for 4+ days figuring out this issue. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 20, 2025 · Acceleration, Transmission · NV

While driving on the highway at 80 mph, the accelerator suddenly stopped working and was completely unresponsive. The dashboard displayed the message "Check Hybrid system. Stop safely" and a warning ding sounded. The gas engine was still operating and showing RPMs on the dashboard, but all acceleration and/or engagement with the engine was lost. I was able to coast and safely pull over to the side of the road. After pulling over, I turned off the engine and pushed the 12v battery reset button. The car restarted, and I was able to continue driving. The issue repeated about 20 miles later and again on a different drive four days later. Each time, there is no early warning or noticeable issue with the vehicle before the sudden warning and loss of power.