2021 KIA SELTOS Complaints

View complaints related to 2021 KIA SELTOS. The complaints found here are submitted by actual consumers with first hand experience. There are more than 360 complaints submitted for the 2021 KIA SELTOS. You can submit your own complaint to the NHTSA or call the Hotline, Monday-Friday 8am to 8pm at (888) 327-4236, TTY: (800) 424-9153.

  • 2021 KIA SELTOS
    - Cape May Court House, NJ

    The contact owns a 2021 Kia Seltos. The contact stated that while driving at 80 MPH, the vehicle stalled with the check engine warning light illuminated. The vehicle was restarted; however, the failure recurred. The vehicle was towed to the dealer where it was diagnosed and determined that the engine block had failed, and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 66,000.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2021 KIA SELTOS
    - Ellsworth, WI

    The contact owns a 2021 Kia Seltos. The contact stated that while driving at an undisclosed speed, the vehicle shut off while depressing the brake pedal. The contact stated that prior to the failure, the check engine warning light was displayed on the instrument panel; however, the check engine warning light was reset after the initial failure. The vehicle was not repaired. Neither the dealer nor the manufacturer was notified of the failure. The failure mileage was approximately 72,000.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2021 KIA SELTOS
    - Topeka, KS

    Transmission failed at 37k miles..noticed when the car was sluggish. Open the hood and the coolant reservoir was black. Kia replaced transmission but thinking about trading it in

    Source: NHTSA WEB SITE
  • 2021 KIA SELTOS
    - Moose Lake, MN

    My car has an issue holding oil. I have had to put quarts of oil in often and it makes my engine knock. It also makes my car lose power while I am driving. I know this is a common issue with these make and models.

    Source: NHTSA WEB SITE
  • 2021 KIA SELTOS
    - Centennial, CO

    Horn stopped working. This puts me and passengers at a safety risk as I am unable to alert other drivers and/or pedestrians to potential dangers that could result in reducing the chance of a crash. I am also unable to use the horn to ensure proper security of my car. As the horn also works for my alarm systems to indicate the vehicles locked status. I also cannot utilize the horn as an emergency warning when the panic button is pressed on a key fob. The problem was inspected and determined at my local shop. There were no warning lamps, messages or other symptoms prior to the failure. The horn stopped working on Jan 29, 2025

    Source: NHTSA WEB SITE
  • 2021 KIA SELTOS
    - Syosset, NY

    When the auto engine start/stop button is on and I’m stopped at a light, the infotainment system will constantly restart as will the engine once I let go of the brakes. It usually happens when it is cold outside. This is a safety issue bc a lot of the time I am using the navigation and since the infotainment system just restarted I am waiting for the navigation to reboot and I am now driving without knowing where I am going. It doesn’t seem to happen when I turn off the auto engine start/stop button. Sometimes, I’ll be in an intersection, and the engine will restart bc the infotainment system restarted. Last time I almost got into an accident bc I was trying to accelerate but the car hesitated bc it restarted the engine and radio. There seems like there is a sudden loss of power. The dealer supposedly updated the software for the infotainment system but it did not correct the issue. There is no warning lamps or messages when this occurs

    Source: NHTSA WEB SITE
  • 2021 KIA SELTOS
    - Omaha, NE

    The Seltos started losing power driving on interstate, started smoking and then lost all power and would not start. We had the car towed to Brakes plus where we had an oil change as of recent, they confirmed it was piston ring failure and the engine was done for. The car has just over 28,000 miles on it. Kia dealership and warranty is avoiding to state that it was indeed the piston rings failing. They simply said it needs a new engine and are demanding maintenance records and receipts. My veteran father has performed most of my oil changes, he was a military mechanic and ASE certified mechanic for over 20 years. Since I didn’t personally purchase the oil used, I don’t have the hard copy receipts they are demanding. Kia refuses to acknowledge that the engine failure is that of the same issue with many other 2021 Seltos that had piston ring issues during manufacturing.

    Source: NHTSA WEB SITE
  • 2021 KIA SELTOS
    - Pensacola, FL

    While driving at low speeds, the vehicle would stall, no engine lights or warnings would appear on the dashboard. After turning it off and back on, it would run but stall again shortly later. An unfamiliar foul odor appeared from the dipstick as I checked the oil. Car only has 60k miles on it. Engine is throwing codes for cylinder 1, cylinder 2 and crankshaft.

    Source: NHTSA WEB SITE
  • 2021 KIA SELTOS
    - Bedford, PA

    My 2021 Kia seltos has a flashing engine light and when put on a code reader it indicates a misfire/ piston. This has been going for two weeks . My engine is a 2.0 and the recall for this vehicle has the same incident as mine. The engine keeps shutting off

    Source: NHTSA WEB SITE
  • 2021 KIA SELTOS
    - Happy Valley, OR

    Came to a stop at an intersection on a busy highway, went to accelerate and turn left when the transmission locked without warning. Vehicle would not shift into gear.

    Source: NHTSA WEB SITE