2018 KIA NIRO Complaints

Driver heated seat shorted out and caused burn to leg. System has not been repaired, will wait to hear from Kia Customer Affairs prior to decision to repair. I was injured by this and have concerns about the safety of the vehicle, will this happen again if a new grid is installed. Kia dealership confirmed that the grid showed high resistivity but also claimed since nothing is melted I couldn't have been burned. The vehicle has only been inspected by the dealership currently. there were and are no indicators, warning lights or messages about the failure available. Kia dealerships claims there no way to tell with the electrical systems.

The contact owns a 2018 Kia Niro. The contact stated that occasionally driving at various speeds, the vehicle hesitated to stop as intended while the brake pedal was depressed, and the brake pedal was depressed to the floorboard. The message "Stop - Regenerative Braking Failure" was displayed. The contact restarted the vehicle as a temporary repair; however, the failure reoccurred. The vehicle was taken to a local dealer, where it was diagnosed, and a 91400 fuse Kit was installed, and various repairs were performed. The vehicle was repaired out-of-pocket; however, approximately one month later, the failure reoccurred. The vehicle was taken back to the same local dealer where it was diagnosed; however, the cause of the failure was not determined. The vehicle was not repaired. The contact stated that the vehicle was taken back to the same local dealer, where it remained. Upon further investigation, the contact related the failure to NHTSA Campaign: 23V534000 (Power Train); however, the VIN was not included. The manufacturer was made aware of the failure, and a case was filed; however, was the claim was denied. The failure mileage was approximately 150,000.

Just before Hurricane Helene, I brought my 2018 Kia Niro Hybrid to Asheville Kia (NC) after noticing coolant loss and white smoke coming from the exhaust. The dealership charged me $1,400 for a repair involving new gaskets and the EGR cooler. Within a month, the same symptoms returned. I returned to the dealership and explained I believed the original issue had not been resolved. I had done research and found reports of similar problems in other Niro Hybrids. I specifically mentioned the coolant heat exchanger as a possible source, but they dismissed my input and pushed a $3,500 muffler system replacement. I asked for diagnostic proof, and they initially showed a photo of the muffler with no visible leak. Later, they claimed a "small leak" was found during a pressure test — but the symptoms didn’t align. I then took the vehicle to John’s Kwik Lube in Spruce Pine, NC, where they confirmed the coolant heat exchanger was faulty — exactly what I had originally suspected. They repaired it with a simple workaround for under $200, and I’ve had no issues since. The faulty component (coolant heat exchanger) is not available for inspection, but I retained diagnostic records, pressure test results, and screenshots of the dealership’s estimate. I also documented that Kia’s quote system does not allow access to past service quotes, so I had to screenshot everything manually. The only symptoms were coolant loss and white smoke from the tailpipe, beginning shortly before the storm in September 2018, and recurring until the final repair later that year. The problem was confirmed by an independent mechanic, and partially acknowledged (though misdiagnosed) by the Kia dealership. No police or insurance inspection was involved. This situation posed a safety risk due to reduced visibility, potential engine overheating, and exposure to coolant vapors, especially during uphill driving. The issue is known among Kia owners and appears to be a recurring design flaw in the Niro.

I'm 59 years old never have an accident or had to slam breaks on the guy in front of me slammed his breaks on so I did the same time the brake pedal was to the floor the car didn't even slowed down and not even skid marks hit him then air bags deployed the car was totaled no one got hurt thank God I do t know if any other kia cars had this problem I got real lucky

An alert to "check regenerative brakes" popped up on the dashboard screen. My younger sister who is borrowing our car, told me it now takes her much longer to come to a stop when braking. She's having to brake really early to stop on time but traffic and animals will not always allow for that. From what I am reading online, this is a common issue due to faulty 12v battery or a loose ground from said battery. The only way to fully engaged the conventional brakes (without the regenerative brakes) is to switch the car into neutral and then brake. This is a major safety issue that Kia should address. Maybe they need to address the battery issue, but they definitely should address the fact that you have to shift into neutral to brake properly when the regenerative brakes arent working right. Seems like a common sense plan to have it default to conventional brakes when the others are having issues or at least provide a way to turn off regenerative brakes.

Known issues with wiring cause check engine light to come on and also now the door open sensors to stay on. Just paid $800 for a known issue to the wiring that a Kia technical bulletin wss issued for, however the cost was left to the customer.

Hydraulic Clutch Actuator recall was previously done and only a fuse was changed as the inspection only determined the actuator itself did not have an active code. 4 months has gone by and now the actuator has now failed.

Internal combustion engine coolant leaking out exhaust. The heat exchanger located in the catalytic converter system is leaking, leading to the ICE coolant draining. This leads to the engine overheating, and damage. Signs of the issue started with the coolant level lowering quickly, then the car heater stopped working. This confirmed by an independent mechanic.

The contact owns a 2018 Kia Niro. The contact received notification of NHTSA Campaign Number: 23V534000 (Power Train); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

The contact owns a 2018 Kia Niro. The contact stated that while operating the vehicle, the vehicle failed to shift out of neutral while shifting the gear shift lever. The check engine warning light was illuminated. The vehicle was towed to an independent mechanic where it was diagnosed and the DTC code: P090B:73 error was retrieved. In addition, the contact stated that an unknown message was displayed. The local dealer was contacted and informed the contact that the failure was related to an unidentified recall; however, the VIN was not included. The manufacturer was not made aware of the failure. The failure mileage was approximately 136,663.