2023 Hyundai Sonata Engine Problems

Your 2023 Sonata has a safety-related recall code (286) that Hyundai has been unable to fix for nearly three months. Hyundai's corporate team collected your financing and vehicle information but has failed to provide promised updates or a solution, leaving you without a working car or loaner vehicle. You're concerned about a potential fire risk while driving. The repair will likely require Hyundai's service department to diagnose and replace whatever component is triggering the recall code 286.

Your car lost all its coolant overnight and overheated twice on the highway, but you couldn't find any visible leaks. The dealership discovered coolant was leaking into your exhaust system and burning off instead of dripping out. Hyundai had a known bulletin about this issue and had to redesign the part to fix it, which required special ordering and a week without your car. The repair cost $1,300 and wasn't covered by warranty.

Your 2023 Sonata Hybrid may develop an internal coolant leak in the cooling system that causes white steam to come from the exhaust, especially during acceleration. When this happens, coolant drains quickly, your interior heater stops working, and your engine overheating warning appears, forcing you to stop driving immediately. This defect may require inspection and repair of the coolant system, possibly including the Exhaust Heat Recovery System (EHRS) component.

Your fuel injectors have failed twice, causing your engine to sputter and your accelerator to stop working while driving on local roads. Both times the engine died, forcing you to push the car to safety with traffic around you. The dealer has replaced 3 of your 4 fuel injectors, but one remains unreplaced, leaving you concerned about another failure occurring while driving.

I'm submitting a complaint about the engine or cooling system in my 2023 Hyundai Sonata. Please refer to the attached document for the full details of the issue.

I was driving my 2023 Hyundai Sonata with 22,000 miles on I-96 near Grand Rapids Michigan at or slightly below the speed limit of 70 MPH. Suddenly, with no advance warning of any kind, the engine shut down. I was able to coast and maneuver to the right shoulder of the road while avoiding traffic, including a large tractor trailer that almost hit us. The vehicle than had just enough power to get off the next exit and on a local side street. At that point the vehicle would not restart and you could smell a strong odor of fuel. I called Hyundai and they sent a tow truck to take it to the nearest dealer. (I am 700 miles from home). The dealer's service department diagnosed the problem then replaced the fuel injectors still under warranty.

Coming home from work I stopped at a red light and when I tried to accelerate the vehicle was surging and jerking shaking and wouldn't pick up speed 2 min later the check engine light appeared flashing thankfully I was 5 min from home got the car towed the next morning to hyundai dealership said it was an cylinder misfire the car only has 30,000 miles on it

2023 Hyundai Sonata N-Line bought on [XXX]. Engine Control System failed 2 times w/in first 4 months. 1ST ENGINE INCIDENT ● [XXX] (Approximately 1:30 p.m.) ○ I was driving (1,949 miles on odometer) at an intersection when car lost power, lights on dashboard starting flashing & ignition shut off in the middle of intersection. ○ On dashboard notification stated “A possible condition with your engine control system has been detected with your 2023 Hyundai Sonata [XXX] ) on [XXX] at 1:25 p.m. A full system check is recommended to be done soon”. I also received notification via email. ○ Couldn't get appointment until [XXX] Cesar advised me they did diagnostic test & test drive & couldn’t find the problem. They made no repairs & made a notification in system of this problem. He stated that if it happens again to bring the car back. 2ND ENGINE INCIDENT ● [XXX] ○ My husband & I were driving (4,177 on odometer) & I was pulling out of a side street to make a left hand turn into a busy 4 lane street & as I drove ½ way across street my car lost all power, lights on my dashboard started flashing, ignition shut off & two cars were driving towards us about to T-bone us my driver's side. Cars braked suddenly to avoid hitting us. ○ On the dashboard of my car was a notification stating “A possible condition with your engine control system has been detected with your 2023 Hyundai Sonata [XXX] ) on [XXX] at 1:15 p.m. A full system check is recommended to be done soon”. I also received this notification via email. Dropped car off at Fontana Hyundai on [XXX]. Did diagnostic test & engine specialists inspection; couldn't find problem They said we will replace this part and hope it doesn't happen again. How do you put someone back in a car when you haven't diagnosed the problem; that's a serious safety issue, my life is endangered. Supposed to pick car up [XXX]. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Driving going 30 mph, vehicle stopped accelerating. Error code was Engine Control System failure. Codes P2178, P0301 and P0087F0 were shown at dealership. Car was taken to dealership for repairs where the fuel injector on cylinder #1. 16 days after receiving car back, we went to start the car and it wouldn't start. After several attempts, gasoline began spewing from the car leaking an entire tank of gas on our garage floor and driveway. Very dangerous! Being towed to dealership again today.

Vehicle’s front collision sensor popped up on dash, vehicle lost all power. Almost was hit by a group a semi trucks hauling a wide load that wouldn’t have been able to stop in time. This is the 3rd time it has happened in a week and a half.

The contact owns a 2023 Hyundai Sonata. The contact stated that on two separate occasions while driving at various speeds, the vehicle started to shake, and the vehicle lost motive power. The vehicle was pulled over to the side of the roadway and turned off. The vehicle failed to restart on both occasions. The vehicle was towed to a dealer where it was diagnosed that the fuel injector needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was approximately 11,000.

The contact owns a 2023 Hyundai Sonata. The contact stated that while her daughter was driving at an undisclosed speed, the vehicle lost motive power. An unknown warning light was illuminated. The vehicle was towed to the dealer; however, no error code was retrieved. The failure recurred while the contact was driving at 60 MPH. The vehicle was then taken to Serra Hyundai (1503 Gadsden Hwy, Trussville, AL 35235); however, no error code was retrieved, and the vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 80.