2019 Hyundai Kona: misfire or rough idle

Filed May 22, 2026 · Engine · 78,000 miles · TX

The contact owns a 2019 Hyundai Kona. The contact observed excessive oil consumption, which has progressively caused the vehicle to stall 2 to 3 times per week. While the engine can be restarted, it idles and runs roughly immediately afterward. Additionally, the contact noted a distinct smell of burning oil exiting from the exhaust system. The contact referenced the federal safety agency Campaign Number: 21V301000 (ENGINE) however, the VIN was not included in the recall repair. The vehicle was taken to a independent mechanic where it was diagnosed to have excessive oil consumption. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 78,000.

Filed Mar 23, 2026 · Engine · CA

Vehicle struggling to accelerate and rolling back when brake is not being used. It stays at a few miles per hour even with full pressure on the gas pedal. A mechanic reviewed and stated the problem was due to low compression in the engine, causing the pistons to misfire. This issue has happened a total of 5 times and has almost caused other vehicles to crash into me due to sudden loss of speed and not being able to accelerate fast enough to properly get to safety

Filed Jan 22, 2026 · Engine · IL

I was traveling on the interstate when my car began to slow down and the RPMs kept going up. I pulled over on the side of the highway and turned the motor off. I waited 10 minutes and started the car again thinking it was just a misfire. The motor began making weird noises and shaking. My engine like came on the dashboard display reported major malfunction get help. I was told by my mechanic that I was lucky the car did not catch on fire. He determined that pistons 1 and 3 were misfiring. He said it was being flooded with fuel. I have complained about the excessive burning of oil and that there must be an issue. Several have been recalled but not specific car.

Filed Dec 4, 2024 · Engine · 40,000 miles · NH

The contact owns a 2019 Hyundai Kona. The contact stated upon starting the vehicle, the vehicle made an abnormal sound. Additionally, the contact stated while driving at various speeds, the vehicle made an abnormal knocking and clicking sound. The contact stated that the vehicle had experienced engine hesitation intermittently, and the failure became permanent. The contact stated that the vehicle was experiencing excessive oil consumption. The contact had noticed that the oil level was significantly low, and the oil was significantly black at 500 miles after an oil change. The contact stated that on other occasions, the oil was significantly black while at the normal full. The contact stated that while his wife was driving 20 MPH uphill, the vehicle stalled and started rolling backwards. Several unknown warning lights were illuminated. The vehicle lost power steering and braking functionality, causing the driver to lose control of the vehicle. The vehicle then slowly rolled back off the road and struck a small tree. The contact did not sustain any injuries. The vehicle was restarted after an hour and half. The contact stated that the vehicle stalled while driving 10 MPH on another occasion and was able to restart after 15 minutes. The vehicle was taken to the dealer, where the fault codes were cleared; however, the failure persisted. The vehicle was taken to the dealer, where DTC: P0301 was retrieved. The dealer diagnosed that cylinder #1 had a misfire due to the valve cover gasket leaking oil into cylinder #1. The dealer determined that the valve cover gasket, the spark plugs, and the oil filter needed to be replaced. Additionally, the dealer recommended an engine restoration and fuel induction service. The vehicle was not repaired. The contact related the failure to the federal safety agency Campaign Number: 21V301000 (Engine); however, the VIN was not included. The manufacturer was notified of the failure and a case was opened. The failure mileage was approximately 40,000.

Filed May 23, 2024 · Engine · 116,000 miles · VA

The contact owns a 2019 Hyundai Kona. The contact stated while driving 70 MPH up an incline, the vehicle started losing motive power. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the cylinder #3 spark plug. The vehicle was repaired, but the failure reoccurred. The vehicle was towed to an independent mechanic, who then determined that there was a misfire in cylinder #3. The vehicle was not repaired. After investigating the failure, the contact related the failure to the federal safety agency Campaign Number: 21V301000 (Engine) but the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was 116,000.

Filed Jan 12, 2022 · Engine · MO

Car will stall while driving, coming to a stop and slowing down. Loud clanking and knocking noise in engine, massive oil consumption, engine light illuminated, bad acceleration then stalling, rough idle and stalls while backing up. I am terrified of driving this car and it stalls when turning and coming to a stop or just slowing down. I can smell oil burning and no one at hyndai wants to help me at all. Driving it out of the dealership when I had it checked for the recall and it died 2 times. I am going to lose everything I have worked for all because this car is not working properly. Dealership allowed me to drive away knowing the car stalls while driving and wanted me to pay for another engine diagnostic test even though they stated they did one.this makes no sense and I am severely frustrated!!! I will never buy another hyundai!!!

Filed Aug 20, 2021 · Engine · 20,000 miles · VA

The contact owns a 2019 Hyundai Kona. The contact stated that check engine warning light was illuminated. The vehicle was taken to the local dealer where it was diagnosed with a misfire. The vehicle was not repaired. The vehicle was taken to another local dealer Safford Hyundai of Springfield (7615 Loisdale Rd A, Springfield, VA 22150, (703)776-9040) to be diagnosed. The contact was informed that the service light needed to be reset. The vehicle was repaired. The manufacturer was not notified of the failure. The contact received notification of the federal safety agency Campaign Number: 21V301000 (Engine) after the failure. VIN tool confirms parts not available. The failure mileage was 20,000.