*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Electrical system
My 2023 Kia Niro Hybrid has a recurring intermittent electrical defect. Warnings appear together: Check Hybrid System, Check Engine, Forward Collision, Rear Cross-Traffic, Lane Keeping, Driver Attention, ESC, Brake, Auto Hold. They appear and persist while driving, during which stability control, automatic emergency braking, lane keeping, and related safety assists are disabled. Once, the vehicle would not start and was temporarily disabled, recovering after several minutes. This creates risk from loss of all electronic safety assists in traffic and from the vehicle failing to start when needed. Stored codes show lost CAN communication among multiple modules: U0101, C1611, C1693, U0111,…
Jun 12, 2026Electrical system
When stopping for a traffic sign or light, the car announces that it is shifting into park and does so. The car then will not shift into drive or reverse and is essentially disabled. Turning off the car completely and turning it back on will not return it to "Ready to Drive" mode. Jump starting the car, provided it is jump started twice, will clear the problem and move the car to "Ready to Drive" mode. The car has been towed to dealers on three occasions with the technicians reporting they cannot reproduce the problem and no codes are being logged. On the third occasion, the dealer replaced the 12-volt battery. The failure occurred on the dealer's lot when I arrived to retrieve my car, but…
Apr 25, 2026Electrical system
After sitting 2 weeks at airport parking. 12 volt Battery dead . Unsafe to repeatedly have to take out emergency key and pull handle cover off and get in car hit 12v button to start. The dealer we took it to refuses to replace the 12 volt integrated battery. It has happened multiple times. They checked battery and said it was okay. Repeated having to push 12 volt button unacceptable and unsafe.
Aug 27, 2026Power train
My 2023 Kia Niro Hybrid EX has experienced multiple warning messages and unresolved concerns after previous repairs. After the first recall repair, I began receiving intermittent warning messages while driving. The messages appeared briefly and disappeared before I could safely document them. After a second repair, the transmission was replaced. Shortly afterward, the vehicle displayed an overheating warning. I returned to the dealership, but they stated they could not find a problem. While traveling out of state, on July 6, 2026, the vehicle displayed warnings indicating that the 12V battery needed to be charged. On July 8, 2026, the vehicle would turn on, but the engine would not start or…
Jul 8, 2026Unknown or other
There's a problem with the horn in my car. Either the high or low. The problem is intermittent and the horn will fail and it is not available in emergency situations. I brought this to the dealership and made them aware but they refuse to take this seriously and two adequately evaluate the car. They blew the horn and said it was working. It was not working and I said it was intermittent and they said well we could not find any problem. There were no warning lights. Nothing else. The horn is just intermittently failing.
Jun 26, 2026Steering › Linkages › Tie rod assembly
The contact owns a 2023 Kia Niro. The contact stated that while her husband was driving at 40 MPH, the vehicle hydroplaned and pulled to the left unexpectedly. The contact initially contacted the dealer and was informed of the headlamp replacement and general inspection. Additionally, while the contact's husband was driving, the driver-side front tire experienced a blowout near a service station; the technician advised that the tire exhibited steel tread. An independent mechanic attempted a wheel alignment but discovered a rusted, bent tie rod, preventing the service. Following dealer instructions, the vehicle was towed to the dealer, where the wheels, both hub bearings, tie rods, and brake…
Apr 22, 2026 · 71,000 milesChest clip, buckle, harness
Car seat lower hip straps frayed on both sides. Had we been in an accident I have no doubt the strap would have ripped. I have 3 personal friends who checked their same Evenflo Revolve 350 car seat to find fraying in the exact same spots. And dozens of posts online with pictures showing the exact issues as well. The integrity of that straps in these seats are obviously compromised for so many people to be having them fray in the exact location. Evenflo is telling us all it's due to "external factors such as a mouse" but it would not all be the same car seat it happens to, in the exact same place on the seat, to people who drive their vehicles daily and have no other wings of rodents in…
May 15, 2026Vehicle speed control
The contact owns a 2023 Kia Niro. The contact stated that while driving at 25 MPH, the vehicle independently accelerated. The contact constantly depressed the brake pedal to stop the vehicle. The contact was able to coast the vehicle to the residence while depressing the brake pedal to prevent the unintended acceleration. Neither a dealer nor an independent mechanic was contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 11,000.
Apr 23, 2026 · 11,000 miles
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.
