2017 Kia Niro problems

Filed Oct 30, 2026 · Engine · TX

Second failure of the EGR cooler on this vehicle in under 90 days. Kia's own Pitstop PS730 (May 2022) identifies internal leakage of the EGR cooler on 2017 to 2022 Niro HEV as the cause of coolant loss, random misfires, and overheating. First failure: coolant tracked through the intake into the cylinders, all-cylinder misfires and loss of power, repaired by Crain Kia of Fayetteville AR on RO 1436350, picked up September 4, 2026, customer paid $1,931.52. Second failure: on October 30, 2026 the same dealer confirmed on video that the replacement EGR cooler it installed September 4 had failed and was leaking coolant, under eight weeks after installation. Symptoms were sudden coolant loss and misfires on cylinders 1 and 4 while driving. The driver is a college student making 460-mile solo highway trips in this car. Loss of coolant and misfires at highway speed are a safety hazard. The failed component is at the dealer and available for inspection. Kia declined my first goodwill request on this repair under Kia Consumer Assistance case 26294863; a second request is pending following this repeat failure.

Filed Sep 20, 2026 · Electrical · TN

September 18th I had to jump the battery from the 12 volt switch at the drivers side dash. Going to the dealership where I had bought it on August 27th I noticed smoke rolling out from behind the car. I exited off the highway 40 and checked the oil it was clean and full. Water level in radiator was also fine. It smoked several times during the trip but the service department at Parkside Kia was no longer opened so I returned the next morning when I got there they service department technician could not find anything wrong with the battery and he never seen any smoke. Now, I will take it to another Kia dealership in my area because I do not feel side driving it on the highway on a long trip anymore.

Filed Sep 16, 2026 · Electrical, Engine · TN · fire

On XXX, at approximately 11:30 a.m., a friend and I were driving on XXX near [XXX], when I noticed smoke coming from the engine compartment. As I pulled over to the side of the road, a warning light appeared on the dashboard. Once stopped, I saw flames coming from the engine compartment. We immediately got out of the car, retrieved our dogs from the back seat, and ran away from the burning car. Another motorist who had witnessed the flames pulled over behind us. Because our cell phones were still inside the car, we used his phone to call [XXX]. The Tennessee Highway Patrol and the Fire Department responded to the scene. The car was completely destroyed by the fire and was declared a total loss. We were unable to retrieve anything from the car. There was no collision with another car or object. The car is now located at [XXX]. Telephone [XXX]. On XXX KIA Ourisman of [XXX] had installed a rebuilt engine, as according to them, the original engine had “thrown a rod.” An insurance claim has been filed with GEICO. Complaints have been filed with KIA of [XXX] and [XXX] KIA of [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 14, 2026 · Electrical, Transmission · SC

The vehicle's hydraulic clutch actuator (HCA) has failed and is actively leaking fluid onto the printed circuit board (PCB), creating an immediate electrical short and engine bay fire hazard. This failure is identical to the defect detailed in Safety Recall SC276 (the federal safety agency Campaign 23V534). As indicated by a search of my VIN, the vehicle was brought in by us previously when we learned there was a recall, and the recall was officially marked "completed" in the federal safety agency database. However, the dealership at the time claimed the vehicle was not affected by the recall, stating there was nothing wrong. They simply performed the minor step of changing a fuse to mark it as completed but did not provide an actual remedy or replacement for the actuator assembly itself. The original manufacturing defect has now actively manifested, causing a severe, active fire risk. The vehicle is currently grounded at an authorized Kia dealership. The dealership and Kia Corporate have acknowledged the dangerous defect by offering a partial goodwill gesture to cover the replacement parts. However, they are refusing to cover the $750+ labor charge required to safely replace the fire-prone assembly. Furthermore, the dealership has held my vehicle for over a month, taking a full month just to communicate this partial remedy. I am filing this complaint because a previously executed safety recall has catastrophically failed, and the manufacturer is refusing to completely remediate an active, federally documented fire hazard free of charge.

Filed Aug 27, 2026 · Electrical, Fuel system · FL

My 2017 Kia Niro has developed a serious hybrid system failure that causes the vehicle to shut off unexpectedly while driving. For about a month, the car would only start using the “12V Battery Reset” button. Now it starts, but after driving a short distance, the vehicle loses power and shuts off without warning. The only way to restart it is by pressing the reset button again. The AC and accessories continue to run, and the high‑voltage battery appears to charge normally, but the car cannot maintain 12V power under load. This is consistent with a DC‑DC converter or 12V subsystem failure, which is a known issue in early Kia Niro hybrids. This sudden shutdown creates a dangerous situation, especially in traffic. I am reporting this as a safety defect due to the unexpected loss of motive power. There is no recall for this issue, but many owners have reported similar failures.

Filed Aug 1, 2026 · Brakes, Electrical · TX

2017 Kia Niro Hybrid subject to Safety Recall SC276 (the federal safety agency Campaign 23V534) for the Hydraulic Clutch Actuator (HCA). Fluid contamination of the HCA PCB can cause an electrical short and engine compartment fire risk. Official remedy is HCA inspection/replacement as necessary plus a new fuse. Three dealer visits: Shortly after purchase for SC276 recall and routine service. Dealer performed HCA Inspect/Replace, reported no problem codes, and replaced the fuse. After sudden complete loss of propulsion on the freeway at 60-65 mph with a passenger. Engine RPM rose sharply as if in neutral. No accelerator response. Brake system warning lights illuminated. Had to pull over to the shoulder, shut off and restart before it would move. Took to dealer same day. They kept it several days, found no codes, could not duplicate, and released as "good to go." Vehicle later would not move and entered limp mode. Towed to dealer. That morning I replaced spark plugs myself with new NGK Laser Iridium Premium and informed the dealer. HCA fluid reservoir was empty. Dealer diagnosed internal leak in the HCA causing clutch contamination. Photos showed green fluid on undercarriage. Repair estimate exceeds $6900. Same Multi-Point Inspection that diagnosed the internal leak marked fluid leaks and fluids as Passed. Report still recommended spark plug replacement despite being told they were just replaced. Sudden loss of propulsion on public freeway with a passenger present, followed by complete loss of driveability due to internal leak of the same recalled HCA component, created a clear safety risk. Vehicle became undriveable and required towing. Prior "good to go" release left the vehicle on the road with an unresolved issue involving the recalled component.

Filed Jul 28, 2026 · Electrical, Engine · GA

My 2017 Kia Niro exhibits a dangerous low-speed engine surging hazard matching Safety Recall SC276. An authorized Kia dealership technician inspected the vehicle under RO #6115244 and formally documented 'seeping fluid residue' inside the clutch actuator housing. However, the dealership and Kia Corporate are refusing to honor the recall remedy and have released the car at a $0.00 balance while explicitly stating in writing that the vehicle is 'not safe to drive.' I am requesting federal intervention for safety campaign non-compliance.

Filed Jul 19, 2026 · TX

I am submitting this complaint regarding a repeat failure of the Active Air Flap System on my 2017 Kia Niro, which I believe raises a broader safety and reliability concern. On XXX, my vehicle displayed a check engine light and “Check Active Air Flap System” warning. An authorized Kia dealer, Huffines Kia Corinth in Texas, diagnosed the issue and replaced the active air flap assembly (listed on the repair order as “FLAP ASSY–ACTIVE AIR”) at approximately 87,638 miles. At around 105,000 miles, the same warning and check engine light have returned, indicating that the Active Air Flap System is again malfunctioning despite the prior repair and part replacement. This suggests either repeated component failure or an underlying design or control issue that was not resolved. Owners of Kia Niro and related Hyundai/Kia models frequently report similar Active Air Flap System warnings and related diagnostic codes, and Kia has issued technical guidance addressing inspection, cleaning, and software behavior for this system. Although these issues may not yet be the subject of a formal recall, the pattern of repeated failures across multiple vehicles points to a systemic problem in a component tied to engine cooling and efficiency, which can reasonably affect safety, emissions, and vehicle reliability. I am asking the federal safety agency to review Kia’s handling of Active Air Flap System failures on the Niro and related models, including repeat failures after dealer repair, and to consider whether this issue warrants further investigation or recall/extended coverage action. Vehicle: 2017 Kia Niro Approximate mileage at initial repair: 87,638 Approximate mileage at repeat failure: 105,000 Location of repair: Huffines Kia Corinth[XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 18, 2026 · Engine · CA

Kia Dealership (DCH Kia of Temecula) Repair order 237695 shows Recall SC276 was 'passed' via inspection on October 16, 2025. However, the Hydraulic Clutch Actuator has now suffered the exact fluid leak the recall warned about, destroying the slave cylinder. The dealership is refusing to honor the safety recall, leaving an active fire hazard unaddressed.

Filed Jun 2, 2026 · Electrical, Engine · TX

On or around March 20, 2026, my 2017 Kia Niro Hybrid experienced a complete failure of the high-voltage hybrid battery system, rendering the vehicle undriveable. The vehicle was towed to Kia of South Austin. As of the date of this complaint (74 days later), no diagnosis has been provided, no parts have been ordered with trackable confirmation, and no repair timeline has been given. Kia Techline corporate engineers are reportedly involved but have provided no resolution. A sudden high-voltage battery failure in a hybrid vehicle raises potential safety concerns I believe warrant the federal safety agency's attention, particularly given the extended inability to diagnose or repair the system.