KIA Complaints

I purchased this vehicle used just four months ago. Since then, I’ve had continual problems with it, costing me a significant amount of money. To date, it required all new tires, a new battery, and multiple problems related to the engine light turning on. So far, these problems have resulted in two sensors being replaced and my catalytic converter becoming so clogged that the car lost all acceleration while on the highway. A Kia dealer wanted $2800 to repair the catalytic converter. I then had to have it towed to private mechanic who only charged me $700 for the same repair. However, the engine light continues to go on. The latest later scan indicates that yet had another sensor needs to be replaced.

Vehicle range went from 320+ miles on a 100% charge to just 100 miles on 100% charge. Looks to be a bad battery cell or battery itself. No warning lights of any kind. Just super degraded range. Vehicle is new and has around 5800 miles. Dealer doesn't have techs to work on batteries, so they are having to play telephone game with Kia tech line in Korea.

Regarding NHTSA Recall No. \/ MFR Recall No. : 24V-867 \/ SC327, I have contacted Kia America by email who is avoiding to take action in rectifying the SC327 defect. From March 11th to March 15th 2025 I have emailed Kia several times to address the issue of my Kia EV6 car, the lack of response from their side compels me to lodge a complaint with you. Please intervene in my case with Kia. Below is the latest correspondence from Kia.

Vibration at highway speeds above 65mph. Online forums make it seem like a common defect.

We have received the security update for the ignition system over a year ago for the recall. Even with this recall fix our vehicle was still stolen, so this solution clearly didn't work.

While driving down the highway, I heard a loud boom and my sunroof exploded sending glass everywhere all through the car with my kids in the backseat. Driving straight on the highway at 60 miles per hour and nothing to hit the glass, Something is definitely wrong with the pano sunroof on these cars.

This has happened on 2 occasions, 1 while starting the car 1 while driving. Both times the cars volume went to max with either radio or Bluetooth on and produced a static noise with it. The volume knob did not adjust the piercing noise unless set to 0 or mute. This was remedied by pulling the amp fuze and reseting the radio. I had no lights or warnings pop up, and have yet to have this inspected by a dealership. This instant volume switch to max output with static while driving almost caused an accident as I was distracted trying to turn down my radio as quickly as possible with pain in my ears on the interstate. While stationary even after turning down the radio I still have lingering pain from how loud it was. From what I can tell this is something with the radio unit or amp within the car.

The contact owns a 2018 Kia Sportage. The contact stated that upon having the vehicle serviced by an independent mobile mechanic, the contact was informed that the engine oil level was extremely low after a recent oil change. No warning lights were illuminated. The vehicle was taken to an independent mechanic, who was unable to provide a specific diagnostic result for the failure; however, the contact was informed that the vehicle was consuming an excessive amount of engine oil. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 105,000.

I started burning oil faster than my oil changes were due. One of the techs told me he had seen far too many Kias with this known issue. My Checked engine light came on a couple months after. When I took it in the shop they ran a compression test and advised that the engine was on its way out and stated they would recommend replacing the engine due to oil consumption and low engine compression. I am the 2nd owner to this vehicle and have maintained all the maintenance on it. Its crazy that I still have 3 more years paying for it at 148,000. As many complaints as there are online for this vehicle Kia should definitely be looking into it. At least up the warranty mileage. I drive my kids with this vehicle and feel at any minute its just going to give out on the highway.

3 weeks after picking up our Kia EV9, I noticed a thunking sound from the passenger side front tire. When we reached home, we opened the car cover and noticed that the lug nut had come off and was rattling behind the cover. We called the dealership and the asked us to bring the car in. Since we didn't want to drive it, we bought a torque wrench and tightened it ourselves, after getting the information from the dealership on how much to tighten it. We also noticed that all the lug nuts were under torqued and the driver side lug nut was very loose. I also read multiple reports on online forums (Reddit) about new Kia EV9 wheels flying off on the highway.