2020 Hyundai Kona

While driving the car it stalled and all dash lights came in. After about 20 mins it started back up and I proceeded down the road. After a few minutes the engine light came on blinking. I got the car to a local mechanic who placed it in the diagnostic machine. It came back code engine-pistons. I have a Hyandai 2020 Kona MPI-NU 2.0l engine but it was not included in the recall of the same vehicles.

My vehicle has a very rough idle-vibrating at idle or stopped and not shifting properly-gear slipping. There is sluggish acceleration or jerking and the problem worsens while at a stop light/stop sign or at times when making a turn. The RPM goes between 200-300 when I accelerate to go from a stop and the car revs as it slowly hits 20 mph and then jerks into the 30-40mph on the streets. I took it to the dealer January 2025 where they could not duplicate the concern, and all they did was a TCM judder improvement update for the DCT. The problem was dismissed as being an issue associated with the DCT and was told that unless a warning light turned on or my car broke down on me, they couldn't do anything more. The service representative advised that if I am in stop and go traffic and the car starts vibrating or shaking, I should pull over the side and turn off the car for a few minutes before continuing on my way. It has been less than 2 months and I have to take it back to the dealer so they can run diagnostics on it again. Same issues, no warning lights on the dashboard indicating there is a problem, but I am not comfortable driving the car anymore.

The contact owns a 2020 Hyundai Kona. The contact stated that while her daughter was driving approximately 30 MPH, the check engine warning light illuminated, and the vehicle stalled. The driver was unable to restart the vehicle and had the vehicle towed to an independent mechanic. The contact stated that the mechanic had not diagnosed the vehicle; however, an oil change was performed. The vehicle was repaired; however, the check engine warning light remained constantly illuminated. The contact that the vehicle was taken to a local dealer and two software updates were performed as per the manufacturer recalls on the vehicle, but the contact was informed that the recall repair for NHTSA Campaign Number: 21V301000 (Engine) could not be performed. The contact stated that the check engine warning light remained illuminated, and the vehicle was taken to an independent mechanic. The mechanic related the engine warning light being illuminated with the unrepaired recall. The contact was referred to the dealer again for assistance. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 106,000.

Vehicle has problems shifting between 1st and 2nd gear. Stutters and has issues accelerating. Has almost caused me to be hit while turning left against traffic. Was serviced at Hyundai dealership today and they cannot replicate the issue or find anything wrong and reprogrammed the clutch touch point engagement. It happened again on the way home.

When stopped at a light, I hit the gas and the car just sputtered. The car jolted and did not move, finally, hit the gas again it was able to move. It has happen before. My roommate's Dad told me I need to keep track of problem and file a report. I was told the injectors needed to be cleaned. I put injector cleaner into it, It seem to help but it happened again. It seems the dealer just says something needs to be cleaned.

The vehicle shut down while I was driving approximately 40 mph on a major throughway out of town. I was unfamiliar with the area and had to quickly pull over into a resident's driveway. I immediately shut the vehicle down and tried to restart it. It would not turn over, so I waited a few minutes and tried again. The engine then made a noise that almost sounded like "I quit" and would not make any noise when I turned the key after that. I called a local tow company who towed it to Firestone Complete Auto Care which was the nearest open garage. After they ran their diagnostic, they said that the engine had seized and that there was no oil in the reserve. I never had any engine lights light up on the dashboard until the second the car stopped working, when they ALL came on. My mechanic friend says that these engines have computers that time stamp when the warning lights come on, so it will be interesting to know if they use that information. I have contacted Hyundai customer service and because we are not the original owners of the vehicle, they said the powertrain/engine is not covered under the 5 year/60k mile warranty from Hyundai. We do have an extended warranty through a 3rd party company, but they are giving us a difficult time too. We are still waiting to hear if they will cover the replacement of the engine. This is a HUGE safety risk because my vehicle gave no advanced warning that it was needing service/maintenance and just stopped functioning while I was driving. If I had been on a different street or in the middle of a turn, it could have resulted in injury/death of occupants of the vehicle. My oldest son is also just starting to drive. If he were driving this vehicle when this occurred, he may not have known what to do and could have been stranded in the middle of a busy highway, where an accident could have been imminent.

The contact owns a 2020 Hyundai Kona. The contact stated while driving approximately 40 MPH, the check engine warning light illuminated. The contact drove to her destination and while shifting the vehicle into park (P), the vehicle was shaking violently. The contact drove the vehicle to an independent mechanic who determined that the engine was losing compression and referred the contact to a dealer. The contact drove the vehicle for several weeks more due to scheduling at the dealer. The contact observed that the vehicle was consuming oil at an excessive rate. The contact stated that the check engine warning light was constantly illuminated, and the vehicle was intermittently stalling. The contact drove the vehicle to a dealer who determined that the cam shaft and timing belt needed to be replaced. The vehicle was repaired. The contact retrieved the vehicle and the failure reoccurred. The contact stated that the vehicle was stalling, and the check engine warning light was constantly illuminated. The contact returned the vehicle to the same dealer who diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired. The contact had the vehicle towed to an independent mechanic who diagnosed and determined that the piston oil rings in engine cylinder #3 were cracked and damaged the cylinder and the engine. The vehicle was not repaired. The contact was notified by the independent mechanic of NHTSA Campaign Number: 21V301000 (Engine). The contact contacted the manufacturer and was informed that the VIN was not included. The failure mileage was approximately 104,000.

In May 2023 after washing and vacuuming my car, it would not start. The battery appeared dead. I waited and tried periodically, and after about three tries, It started. This happened a couple more times, but always restarted and appeared to recharge. I did not drive the car from June - October, and asked my son to start it periodically while I was away. He tried in Mid June and battery was dead and had to be jumped. The same thing happened in Aug and Sept. Unfortunately, by the time I returned and could get in into Hyundai, it had been 38 months since my purchase. in October the battery seemed to be okay, but the horn did not work. Also, the windshield washer only trickled out and then nothing came out. I made appointment as I had also had a recall on the safety/theft issues. In November, Hyundai of Bradenton, Florida's Serviceman, Mark told me that I needed a new battery which was no longer under warranty and they replaced the horn as it was covered. He said the windshield washer unit was clogged. I chose not to pay $340 for a battery and $80 to unclog windshield washer unit from them. I just feel something is off. On my drive home, the radio came on without prompt. I turned it off, and it came back on seconds later. I turned it off again, and it stayed off. My car is immaculate, and covered when not in use. There is definitely and issue. My Kona only has 21,000 miles on it. Thank you for helping me with this. Please advise. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)